CN103916194B - Phase regulator and wavelength-division multiplex phase regulation method - Google Patents
Phase regulator and wavelength-division multiplex phase regulation method Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of phase regulator and wavelength-division multiplex phase regulation method, relate to wavelength-division multiplex field, it is possible to increase the testing efficiency of wavelength-division multiplex signals.The phase regulator of the embodiment of the present invention, including: light demultiplexer；Multiple optical-electrical converters, multiple inputs of multiple optical-electrical converters are connected with multiple outfan one_to_one corresponding of light demultiplexer；Phase detectors, including multiple phase detection units；Processor, multiple inputs of processor connect one to one with multiple outfans of multiple phase detection units；Light time delay module, including many optical delay lines, many optical delay lines are connected with multiple outfan one_to_one corresponding of light demultiplexer, and the control signal input of many optical delay lines is connected with processor respectively；Optical multiplexer, including one outfan of multiple inputs.
Description
Technical field
The present invention relates to wavelength-division multiplex field, particularly relate to a kind of phase regulator and wavelength-division multiplex
Phase regulation method.
Background technology
Wavelength-division multiplex technique (English: Wavelength Division Multiplexing, abbreviation:
WDM) allow in single fiber, transmit multi beam lightwave signal simultaneously, lightwave signal carries
Data message, is mutually independent between multi beam lightwave signal.Such as: single fiber transmission has
(wavelength of eight bundle lightwave signals is respectively λ to eight bundle lightwave signals1～λ8).Wavelength-division multiplex technique
First wavelength is respectively λ1～λ8Lightwave signal be combined, the most incrementally combine
Wavelength is λ1And λ2Two-beam ripple signal includes λ in order to be formed1And λ2Two wavelength single
Optical signal.Being similar to, repeat combinations thereof process, including λ until being formed1～λ8Eight wavelength
Single optical signal, then by formed single optical signal transmit in single fiber.Wherein,
The single optical signal including multiple wavelength is referred to as wavelength-division multiplex signals.
Additionally, wavelength-division multiplex signals can also be decomposed to form a branch of or multi beam lightwave signal,
The process decomposing wavelength-division multiplex is referred to as demultiplexing, and demultiplexing generally can regard multiplex process as
Inverse process.
When wavelength-division multiplex signals is detected, such as wavelength-division multiplex signals includes wavelength
It is respectively λ1～λ8Lightwave signal.Due to orthogonal between multi beam lightwave signal, therefore cannot
Grasped the situation such as distortion and crosstalk of wavelength-division multiplex signals by test process, cause ripple
The testing efficiency of division multiplex signal is relatively low.
Summary of the invention
Embodiments of the invention technical problem to be solved be to provide a kind of phase regulator and
Wavelength-division multiplex phase regulation method, adjusts to become by multi beam lightwave signal in wavelength-division multiplex signals and holds
The data message carried has multiple phase modulation lightwave signals of same phase, improves wavelength-division multiplex letter
Number testing efficiency.
For solving above-mentioned technical problem, embodiments of the invention adopt the following technical scheme that
The one side of the application, it is provided that a kind of phase regulator, including:
Light demultiplexer, including a multiple outfan of input, demultiplexes the first wavelength-division
Multiplexed signals, generates multiple lightwave signals of different wave length；
Multiple optical-electrical converters, multiple inputs of the plurality of optical-electrical converter are many with described light
Multiple outfan one_to_one corresponding of road demultiplexer are connected, and change the plurality of lightwave signal into multiple
The signal of telecommunication；
Phase detectors, including multiple phase detection units, the plurality of phase detection unit with
Multiple outfan one_to_one corresponding of the plurality of optical-electrical converter are connected, and detect the plurality of signal of telecommunication
Phase place；
Processor, including bus, multiple inputs of described processor are examined with the plurality of phase place
The multiple outfans surveying unit connect one to one, and produce according to the phase calculation of the plurality of signal of telecommunication
The time delay phase modulation desired phase of raw the plurality of lightwave signal is poor；
Light time delay module, including many optical delay lines, described many optical delay lines are many with described light
Multiple outfan one_to_one corresponding of road demultiplexer are connected, and the control letter of described many optical delay lines
Number input is connected with described processor respectively, poor, to institute according to described time delay phase modulation desired phase
State multiple lightwave signal and carry out time delay phase modulation to generate multiple phase modulation lightwave signals；
Optical multiplexer, including one outfan of multiple inputs, described optical multiplexer
Multiple inputs be connected with described many optical delay line one_to_one corresponding, converge the plurality of phase-modulated light
Ripple signal, generates the second wavelength-division multiplex signals.
In the implementation that the first is possible, the plurality of phase detection unit is based on D and touches
Send out device structure, the clock pins of signal of telecommunication input to described d type flip flop, D in described d type flip flop
Pin andPin is connected, and the Q pin of described d type flip flop is output pin.
In conjunction with the implementation that the first is possible, in the implementation that the second is possible, described
The clock pins of d type flip flop is connected with clock, and described clock is used for timing.
In the implementation that the third is possible, described processor is according to the phase place of multiple signals of telecommunication
The time delay phase modulation desired phase calculating the multiple lightwave signals of generation is poor, specifically includes:
The relatively phase place of the plurality of signal of telecommunication, using the phase place of the maximum described signal of telecommunication as ginseng
Examine phase place；
According to phase place and the described fixed phase of the plurality of signal of telecommunication, calculate the plurality of
Phase contrast between phase place and the described fixed phase of the signal of telecommunication.
In the 4th kind of possible implementation, described optical delay line is the integrated ripple of micro-ring resonant cavity
Guide-lighting delay line or tunable optical delay line.
In the 5th kind of possible implementation, above-mentioned phase regulator, also include:
Memorizer, is connected with described processor, for store the phase place of the plurality of signal of telecommunication with
Phase contrast between fixed phase.
In the 6th kind of possible implementation, the many division multiplexers of described light are multilayer dielectric film light
Many division multiplexers or the many division multiplexers of Waveguide array type light or the many points of multiplexings of grating type optical fiber light
Device.
The another aspect of the application, it is provided that a kind of wavelength-division multiplex phase regulation method, including:
Demultiplexing first wave division multiplex signal, generates multiple lightwave signals of different wave length；
Change the plurality of lightwave signal into multiple signals of telecommunication；
Detect the phase place of the plurality of signal of telecommunication；
The time delay producing the plurality of lightwave signal according to the phase calculation of the plurality of signal of telecommunication is adjusted
Phase desired phase is poor；
Poor according to described time delay phase modulation desired phase, the plurality of lightwave signal is carried out time delay tune
To generate multiple phase modulation lightwave signals；
Converge the plurality of phase modulation lightwave signal to generate the second wavelength-division multiplex signals.
In the implementation that the first is possible, the described phase calculation according to multiple signals of telecommunication is produced
The step of the time delay phase modulation desired phase difference of raw multiple lightwave signals, specifically includes:
The relatively phase place of the plurality of signal of telecommunication, using the phase place of the maximum signal of telecommunication as with reference to phase
Position；
According to phase place and the described fixed phase of the plurality of signal of telecommunication, calculate the plurality of
Phase contrast between phase place and the described fixed phase of the signal of telecommunication.
In the implementation that the second is possible, above-mentioned wavelength-division multiplex phase regulation method, also wraps
Include:
Store the phase contrast between phase place and the fixed phase of the plurality of signal of telecommunication.
The phase regulator of the embodiment of the present invention and wavelength-division multiplex phase regulation method, wavelength-division is multiple
The data message becoming carrying with multi beam lightwave signal adjustment in signal has the multiple of same phase
Phase modulation lightwave signal, and phase modulation lightwave signal is converged the wavelength-division multiplex signals that generation is new, utilize
One-time detection process just can complete the test to newly-generated wavelength-division multiplex signals, improves wavelength-division
The testing efficiency of multiplexed signals.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
In describing embodiment, the required accompanying drawing used is briefly described, it should be apparent that under,
Accompanying drawing during face describes is only some embodiments of the present invention, for ordinary skill people
From the point of view of Yuan, on the premise of not paying creative work, it is also possible to obtain it according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the structural representation of phase regulator in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of wavelength-division multiplex phase regulation method in the embodiment of the present invention.
Specific implementation
A kind of phase regulator of embodiment of the present invention offer and wavelength-division multiplex phase regulation method,
The data message that multi beam lightwave signal adjustment in wavelength-division multiplex signals becomes carrying had phase homophase
Multiple phase modulation lightwave signals of position, improve the testing efficiency of wavelength-division multiplex signals.
In below describing, in order to illustrate rather than in order to limit, it is proposed that such as particular system knot
The detail of structure, interface, technology etc, in order to thoroughly cut and understand the present invention.But, this area
Technical staff it should be clear that can also realize in the other embodiments do not have these details
The present invention.In other situation, omit detailed to well-known device, circuit and method
Illustrate, in order to avoid unnecessary details hinders description of the invention.
Below in conjunction with following accompanying drawing, the embodiment of the present invention is described in detail.
A kind of phase regulator of the present embodiment, as it is shown in figure 1, phase regulator includes: light
Demultiplexer 1, multiple optical-electrical converter 2, phase detectors 3, processor 4, light time delay
Module 5 and optical multiplexer 6.Wherein the annexation of each several part is described as follows: light multichannel solution
Multiplexer 1 includes a multiple outfan of input, multiple inputs of multiple optical-electrical converters 2
It is connected with multiple outfan one_to_one corresponding of light demultiplexer 1；Phase detectors 3 include many
Multiple outfans of individual phase detection unit, multiple phase detection units and multiple optical-electrical converters 2
One_to_one corresponding is connected；Processor 4 includes bus, multiple inputs of processor 4 and phase-detection
In device 3, multiple outfans of multiple phase detection units connect one to one；Light time delay module 5 wraps
Including many optical delay lines, multiple outfans of many optical delay lines and light demultiplexer 1 are one by one
Correspondence is connected, and the control signal input of many optical delay lines is connected with processor 4 respectively；Light
Multiplexer 6 includes one outfan of multiple inputs, multiple inputs of optical multiplexer 6
End is connected with many optical delay line one_to_one corresponding.
In the operating process of described phase regulator, first, first wave division multiplex signal S1Defeated
Enter to light demultiplexer 1 demultiplexed generation multi beam lightwave signal.As the present invention one
Planting implementation, light demultiplexer 1 includes an input and multiple outfan.First
Wavelength-division multiplex signals S1Inputted by the input of light demultiplexer 1, light demultiplexer 1
To first wave division multiplex signal S1Carry out de-multiplex operation so that first wave division multiplex signal S1Quilt
It is divided into the lightwave signal of multi beam different wave length, by the lightwave signal of different wave length respectively by different defeated
Go out end to export.Principle according to demultiplexing and feature, light demultiplexer can be divided into: many
Layer dielectric is (English: multilayer dielectric film) type, Waveguide array (English: arrayed
Waveguide grating, abbreviation: AWG) type, grating type optical fiber (English: fiber grating type)
Etc..
Then, as it is shown in figure 1, the input of multiple optical-electrical converter 2 and light demultiplexing
Multiple outfan one_to_one corresponding of device 1 are connected, corresponding to above-mentioned implementation, multiple opto-electronic conversion
Device 2 receives the multi beam lightwave signal of multiple outfans output of light demultiplexer 1 respectively, and
Multi beam lightwave signal is carried out photoelectric conversion and obtains multiple signal of telecommunication, the data of carrying in lightwave signal
Information is converted into the data message of signal of telecommunication carrying.Such as: first wave division multiplex signal S1Demultiplex
With generate eight bundle different wave lengths lightwave signals, the respectively first lightwave signal, the second lightwave signal,
3rd lightwave signal, the 4th lightwave signal, the 5th lightwave signal, the 6th lightwave signal, the 7th light
Ripple signal and the 8th lightwave signal, the hereinafter referred to as first lightwave signal, the second light wave letter
Number ..., the 8th lightwave signal.First light wave is believed by the first optical-electrical converter by opto-electronic conversion
Number being converted into first signal of telecommunication, the second lightwave signal is turned by the second optical-electrical converter by opto-electronic conversion
Turn to second signal of telecommunication ..., the 8th optical-electrical converter passes through opto-electronic conversion by the 8th lightwave signal
It is converted into the 8th signal of telecommunication.
Then, as it is shown in figure 1, phase detectors 3 include multiple phase detection unit, multiple
Phase detection unit is connected with multiple outfan one_to_one corresponding of multiple optical-electrical converters 2.Phase place is examined
Survey device 3 for detecting the phase place of the data message of carrying in multiple signal of telecommunication.It should be noted that
Multiple lightwave signals carry data message, by multiple signals of telecommunication of formation after opto-electronic conversion
Also data message is carried.As a example by the signal of telecommunication of binary modulated coding mode, under this pattern
The data message of signal of telecommunication carrying includes " 0 ", " 1 ".When the data letter that a certain signal of telecommunication carries
Cease from " 0 " become " 1 " time, i.e. this signal of telecommunication from low level become high level time, this data message
The opportunity that change occurs is referred to as in this signal of telecommunication the phase place of the data message of carrying.Examine according to phase place
Surveying the principle and method used, phase detectors can be divided into: phase-detection based on diode structure
Device, phase detectors based on field-effect transistor multiplier etc..A kind of realization side as the present invention
Formula, the phase detectors 3 of the present embodiment include multiple phase detection unit, described phase-detection list
Unit is based on d type flip flop structure.Corresponding multiple signals of telecommunication arrange multiple d type flip flop, and citing comes
Saying, the first signal of telecommunication input to the first d type flip flop, the second signal of telecommunication input trigger to the 2nd D
Device ..., the 8th signal of telecommunication input to the 8th d type flip flop.The signal of telecommunication is input to D and triggers
The clock pins of device, the D pin of d type flip flop andPin is connected, and Q pin is output pin.
With above-mentioned first signal of telecommunication, second signal of telecommunication ... on the basis of a signal of telecommunication in the 8th signal of telecommunication
The signal of telecommunication, the phase place of the data message i.e. carried with this reference electrical signal is 0, any one telecommunications
The phase place of data message of number carrying is the phase contrast between this signal of telecommunication and reference electrical signal.First
D type flip flop receives to a d type flip flop in the 8th d type flip flop, such as the first d type flip flop
First signal of telecommunication, and using first signal of telecommunication as reference electrical signal.To detect the phase of second signal of telecommunication
As a example by the detection process of position, it is described as follows: when the clock pins of the first d type flip flop connects first respectively
Clock, second clock, the 3rd clock, the 4th clock, the 5th clock, the 6th clock, the 7th clock,
The clock pins of the second d type flip flop connects the first clock, and the clock pins of 3d flip-flop is even
Connecing second clock, the clock pins of four d flip-flop connects the 3rd clock, the 5th d type flip flop
Clock pins connect the 4th clock, the clock pins of the 6th d type flip flop connects the 5th clock, the
The clock pins of seven d type flip flops connects the 6th clock, and the clock pins of the 8th d type flip flop connects
7th clock.Using first signal of telecommunication as reference electrical signal, when the data letter of the first signal of telecommunication carrying
Cease from " 0 " become " 1 " time, i.e. first signal of telecommunication from low level become high level time, namely the
One signal of telecommunication occurs that rising edge is (English: time rising edge), the first d type flip flop is triggered also
Export an electric pulse to the first clock, second clock ..., the 7th clock, the first clock,
Second clock ..., the 7th clock receive and start after the electric pulse of this first d type flip flop
Timing；When the data message of the second signal of telecommunication carrying is become " 1 " from " 0 ", namely the second electricity
When rising edge occurs in signal, when the second d type flip flop is triggered and exports an electric pulse to first
Clock, the first clock receives stopping timing after the electric pulse of this second d type flip flop；Now
In one clock, the time of record is the phase contrast between second signal of telecommunication and first signal of telecommunication.Need
Illustrate, the data message of signal of telecommunication carrying includes multiple rising edge, adjacent two risings
A data message cycle is differed along time interval.Therefore, the phase contrast that detects is actual is
nT+T2, wherein n is nonnegative integer, and T is the data message cycle of signal of telecommunication carrying, 0 ＜=T2＜ T.
For convenience of calculating, by T2As the phase contrast between second signal of telecommunication and first signal of telecommunication.Can lead to
Cross various ways and solve T2.For example, with second signal of telecommunication and first signal of telecommunication of detection gained
Phase contrast deduct the data message cycle, it is believed that until subtracting each other the phase contrast of rear gained less than a number
In the breath cycle, the most just can get T2.In this implementation, above-mentioned try to achieve T2Means be only
Exemplary type illustrates, therefore how the present invention is for calculate phase contrast and calculate what phase contrast was used
Circuit or element do not limit, and those skilled in the art can arbitrarily be configured.Thus, second
D type flip flop detects the phase contrast T between second signal of telecommunication and first signal of telecommunication2, T2Also illustrate
The phase place of second signal of telecommunication during signal of telecommunication on the basis of first signal of telecommunication.According to same principle, respectively with
First signal of telecommunication obtains the phase place of the 3rd signal of telecommunication as reference electrical signal, 3d flip-flop detection
T3..., the 8th d type flip flop detection obtains phase place T of the 8th signal of telecommunication8。
Then, as it is shown in figure 1, processor 4 includes bus, multiple inputs of processor 4
Connect one to one with multiple outfans of phase detection units multiple in phase detectors 3.Process
Device 4 receives phase place T of multiple signal of telecommunication2、......、T8And needed for calculating multi beam lightwave signal phase modulation
Phase contrast.As a kind of implementation of the present invention, the phase of processor 4 relatively multiple signals of telecommunication
Position using maximum of which phase place as the fixed phase needed for phase modulation.For example, T6For multiple
Maximum in phase place, then, processor 4 is by T6As the fixed phase needed for phase modulation and calculate
The difference between fixed phase needed for multiple electrical signal phases and phase modulation.Can be calculated successively: the
The phase contrast between fixed phase needed for one electrical signal phase and phase modulation is Δ T1=T6-T1, wherein
ΔT1It is the phase contrast needed for the first lightwave signal phase modulation, due to telecommunications on the basis of first signal of telecommunication
Number, the phase place of the data message of reference electrical signal carrying is 0, so Δ T1=T6；Second signal of telecommunication
The phase contrast between fixed phase needed for phase place and phase modulation is Δ T2=T6-T2；......；8th electricity
The phase contrast between fixed phase needed for signal and phase modulation is Δ T8=T6-T8.So, processor
4 just calculate the phase contrast needed for each lightwave signal phase modulation.
Preferably, the phase regulator of the present embodiment, also include: memorizer 7, be used for storing institute
State the phase contrast between phase place and the fixed phase of multiple signal of telecommunication.
Then, as it is shown in figure 1, light time delay module 5 includes that many optical delay lines, many light prolong
Time line be connected with multiple outfan one_to_one corresponding of light demultiplexer 1, be used for receive multi-beam
Ripple signal；The control signal input of many optical delay lines is connected with processor 4 respectively, is used for connecing
Receive the phase contrast needed for the phase modulation of multi beam lightwave signal.Light time delay module 5 is according to the phase modulation institute received
The phase contrast needed carries out time delay phase modulation to multi beam lightwave signal.The purpose of time delay phase modulation is to make wavelength-division multiple
With the data message of carrying in the multi beam lightwave signal in signal, there is same phase, in order to by one
Secondary detection process obtains the situation such as distortion and crosstalk in wavelength-division multiplex signals.Light time delay module 5 wraps
Including multiple delay line, each delay line is to a branch of light-wave retardation.Principle according to light time delay and feature,
Delay line can be that micro-ring resonant cavity optical delay line is (English: microring resonator-based optical
Delay line) or tunable optical delay line (English: variable optical delay line) etc..
Multiple optical delay lines are respectively the first optical delay line, the second optical delay line ..., the 8th smooth time delay
Line, prolongs the first lightwave signal, the second lightwave signal ..., the 8th lightwave signal respectively
Time phase modulation.For example, as a example by the time delay phase modulation to the second lightwave signal, the second lightwave signal
Phase place be T2, calculating the phase contrast needed for gained phase modulation is Δ T2=T6-T2.Processor 4 configures
Second optical delay line so that the phase delay Δ T of the second lightwave signal2.Through the second optical delay line
Second lightwave signal becomes the second phase modulation lightwave signal, and the second phase modulation lightwave signal is believed with as reference
Number the phase difference variable of the 6th lightwave signal be 0.Equally, the first optical delay line, the 3rd smooth time delay
Line ..., the 8th optical delay line respectively to the first lightwave signal, the 3rd lightwave signal ...,
8th lightwave signal carries out time delay phase modulation, through calculating, and the first phase modulation lightwave signal of generation, the
Three phase modulation lightwave signals ..., the 8th phase modulation lightwave signal and the 6th light wave as reference signal
The phase contrast of signal all becomes 0.6th signal of telecommunication is as reference signal, therefore, to the 6th light wave
Signal does not carry out time delay phase modulation, or it can be appreciated that phase to the 6th lightwave signal time delay phase modulation
Potential difference is Δ T6=T6-T6=0.So far, the multi beam phase modulation generated through light time delay module 5 time delay phase modulation
Lightwave signal, in multi beam phase modulation lightwave signal, the data message of carrying has been respectively provided with identical phase place.
Then, as it is shown in figure 1, optical multiplexer 6 includes one outfan of multiple inputs,
Multiple inputs of optical multiplexer 6 are connected with many optical delay line one_to_one corresponding.Light multichannel is multiple
With device 6 multi beam phase modulation lightwave signal converged and generate the second wavelength-division multiplex signals S2.Corresponding to upper
Stating implementation, optical multiplexer 6 includes multiple input and an outfan, and multi beam is adjusted
Phase lightwave signal is inputted by multiple inputs.Phase modulation lightwave signal is carried out by optical multiplexer 6
Coupling so that multi beam phase modulation lightwave signal is coupled into the second wavelength-division multiplex signals S2；Then by second
Wavelength-division multiplex signals S2Exported by outfan.The process of wavelength-division multiplex is with the process of demultiplexing each other
Inverse process.
So, the phase regulator of the present embodiment is by first wave division multiplex signal S1It is adjusted to second
Wavelength-division multiplex signals S2.Wherein, the second wavelength-division multiplex signals S2It is to be adjusted by the multi beam of same phase
Phase lightwave signal merges generation.The the second wavelength-division multiplex signals S that will generate2Input to oscillograph is carried out
Eye pattern detects, and just can be reflected the second wavelength-division multiplex signals S intuitively by one-time detection process2
Distortion and the situation such as crosstalk.It should be noted that the phase regulator of the present embodiment is first
Wavelength-division multiplex signals S1It is adjusted to the second wavelength-division multiplex signals S2During, only to the first wavelength-division
Multiplexed signals S1The phase place of middle multi beam lightwave signal has carried out time delay adjustment.
As the one more preferably implementation of the present invention, in the phase adjusted of the present embodiment
Device is first corrected before using.The purpose of correction is each in order to eliminate the phase regulator of the present embodiment
Difference between paths, multiple lightwave signals are being converted to many by the most multiple optical-electrical converters
The difference produced between each passage during the individual signal of telecommunication.This trimming process can be described as follows: utilizes standard
Wavelength-division multiplex signals is corrected detection to the phase regulator of the present embodiment.Standard wavelength-division multiplex is believed
Number it is to be coupled, by the multi beam lightwave signal of same phase, the wavelength-division multiplex signals generated.For example,
Standard wave division multiplex signal is by the first standard lightwave signal of same phase, the second standard light wave letter
Number ..., the 8th standard lightwave signal coupling generate.Standard wave division multiplex signal is input to this
The phase regulator of embodiment, the step such as demultiplexed, opto-electronic conversion output many beam alignments signal of telecommunication
To phase detectors 3, phase detectors 3 detect the phase place of many beam alignments signal of telecommunication.With the first school
Electrical signals is as the N Reference Alignment signal of telecommunication, and detection obtains the second correction signal of telecommunication and N Reference Alignment electricity
Phase contrast between signal is Δ t2, the 3rd correction the signal of telecommunication and the N Reference Alignment signal of telecommunication between phase
Potential difference is Δ t3..., the 8th correction the signal of telecommunication and the N Reference Alignment signal of telecommunication between phase contrast be
Δt8.It should be noted that standard wave division multiplex signal is by the multi beam lightwave signal of same phase
Coupling generates.Therefore, the phase difference between many beam alignments signal of telecommunication and the N Reference Alignment signal of telecommunication
t2、Δt3、......、Δt8Reflect be the present embodiment the internal each passage of phase regulator it
Between difference condition.Under this correction mode, processor 4 is by many beam alignments signal of telecommunication and benchmark school
Phase difference t between electrical signals2、Δt3、......、Δt8It is stored in memorizer 7.Entering
During line phase regulation, the phase calibration utilizing correction mode to obtain is poor, can eliminate instrument internal each logical
Difference condition between road, for example, corresponding to above-mentioned implementation, the second lightwave signal is adjusted
Adjusting offset required mutually is Δ T2'=T6-(T2-Δt2), needed for the 3rd lightwave signal phase modulation
Adjusting offset be Δ T3'=T6-(T3-Δt3) ..., needed for the 8th lightwave signal phase modulation
Adjusting offset be Δ T8'=T6-(T8-Δt8).By the correction to phase calibration difference, disappear
Except because of the impact on wavelength-division multiplex phase adjusted process of the instrument error own, so that wavelength-division multiplex
Phase adjusted is more accurate.
The phase regulator of the present embodiment, is adjusted to multi beam lightwave signal in wavelength-division multiplex signals
Data message for carrying has multiple phase modulation lightwave signals of same phase, and is believed by phase modulation light wave
Number converge and to generate new wavelength-division multiplex signals, utilize one-time detection process just can complete newly-generated
The test of wavelength-division multiplex signals, improves the testing efficiency of wavelength-division multiplex signals.
It should be noted that in the embodiment of the present invention, phase regulator each several part purposes is retouched
State, wherein about processor preset reference phase place, calculating phase contrast and light time delay module
The description of time delay phase modulation, is merely exemplary explanation, and not the restriction to technical scheme, affiliated
Those skilled in the art is it can be understood that arrive, in actual application, and can be according to actual need
Each several part device is set and adjusts, to complete all or part of merit in above description
Energy.
Additionally, a kind of wavelength-division multiplex phase regulation method of the embodiment of the present invention, as in figure 2 it is shown,
Including:
Step S1: demultiplexing first wave division multiplex signal, generates multiple light waves letter of different wave length
Number.
As a kind of implementation of the present invention, as it is shown in figure 1, light demultiplexer 1 is wrapped
Include an input and multiple outfan.Light demultiplexer 1 receives input input
First wave division multiplex signal S1, and to first wave division multiplex signal S1Demultiplex so that the
One wavelength-division multiplex signals S1Be divided into the first lightwave signal, the second lightwave signal ..., the 8th
Lightwave signal, and by multiple lightwave signals of generation from more than 1 outfan of light demultiplexer
Output.
Step S2: change the plurality of lightwave signal into multiple signals of telecommunication.
As a kind of implementation of the present invention, as it is shown in figure 1, multiple optical-electrical converter 2 is right
Multiple lightwave signals carry out photoelectric conversion, generate first signal of telecommunication, second signal of telecommunication ...,
8th signal of telecommunication, and by multiple signals of telecommunication of generation from multiple outputs of multiple optical-electrical converters 2
End output.
Step S3: detect the phase place of the plurality of signal of telecommunication.
As a kind of implementation of the present invention, as it is shown in figure 1, phase detectors 3 include many
Individual phase detection unit, for detecting the phase place of multiple signal of telecommunication.Phase detection unit is based on D
Trigger structure, corresponding multiple signals of telecommunication arrange multiple d type flip flop, for example, the first electricity
Signal input to the first d type flip flop, second the signal of telecommunication input to the second d type flip flop ...,
8th signal of telecommunication inputs to the 8th d type flip flop.The signal of telecommunication is input to the clock of d type flip flop and draws
Foot, the D pin of d type flip flop andPin is connected, and Q pin is output pin.With above-mentioned first
The signal of telecommunication, second signal of telecommunication ... the signal of telecommunication on the basis of a signal of telecommunication in the 8th signal of telecommunication,
The phase place of the data message i.e. carried with this reference electrical signal is 0, the carrying of any one signal of telecommunication
The phase place of data message is the phase contrast between this signal of telecommunication and reference electrical signal.Oneth D triggers
Device is to a d type flip flop in the 8th d type flip flop, and the such as first d type flip flop receives the first electricity
Signal, and using first signal of telecommunication as reference electrical signal.Such as first d type flip flop receives first
The signal of telecommunication, and using first signal of telecommunication as reference electrical signal, the second d type flip flop ...,
Eight d type flip flops detect phase place T obtaining second signal of telecommunication respectively2..., the 8th signal of telecommunication
Phase place T8。
Step S4: produce the plurality of lightwave signal according to the phase calculation of the plurality of signal of telecommunication
Time delay phase modulation desired phase poor.
Further, step S4 specifically includes: the relatively phase place of the plurality of signal of telecommunication, with
The phase place of the big signal of telecommunication is as fixed phase；
As a kind of implementation of the present invention, as it is shown in figure 1, processor 4 receives multiple electricity
Phase place T of signal1、T2、......、T8, compare the phase place of multiple signals of telecommunication and with wherein maximum
Phase place as fixed phase.For example, T6For maximum in the phase place of multiple signals of telecommunication,
Then, processor 4 is by T6As the fixed phase needed for phase modulation.
Then, according to phase place and the described fixed phase of the plurality of signal of telecommunication, institute is calculated
State the phase contrast between the phase place of multiple signal of telecommunication and described fixed phase.
As a kind of implementation of the present invention, processor 4 is by T6As fixed phase and calculate
Phase contrast between phase place and the fixed phase of multiple signals of telecommunication.Can be calculated successively: the first electricity
Phase contrast between signal and fixed phase is Δ T1=T6-T1, wherein Δ T1It it is the first light wave letter
Phase contrast needed for number phase modulation, due to the signal of telecommunication on the basis of first signal of telecommunication, reference electrical signal is held
The phase place of the data message carried is 0, so Δ T1=T6；Between second signal of telecommunication and fixed phase
Phase contrast be Δ T2=T6-T2；......；Phase contrast between 8th signal of telecommunication and fixed phase
For Δ T8=T6-T8。
Step S5: poor according to described time delay phase modulation desired phase, enters the plurality of lightwave signal
Line delay phase modulation is to generate multiple phase modulation lightwave signals.
As a kind of implementation of the present invention, as it is shown in figure 1, light time delay module 5 includes many
Root optical delay line, multiple outfans of many optical delay lines and light demultiplexer 1 one a pair
Should be connected, be used for receiving multi beam lightwave signal；The control signal input of many optical delay lines divides
It is not connected with processor 4, is used for the phase contrast needed for receiving the phase modulation of multi beam lightwave signal.Lift
For example, as a example by the time delay phase modulation to the second lightwave signal, the phase place of the second lightwave signal is
T2, calculating the phase contrast needed for gained phase modulation is Δ T2=T6-T2.Processor 4 configures the second light and prolongs
Time line so that the phase delay Δ T of the second lightwave signal2.The second light through the second optical delay line
Ripple signal becomes the second phase modulation lightwave signal, the second phase modulation lightwave signal with as reference signal
The phase difference variable of the 6th lightwave signal is 0.Equally, the first optical delay line, the 3rd smooth time delay
Line ..., the 8th optical delay line respectively to the first lightwave signal, the 3rd lightwave signal ...,
8th lightwave signal carries out time delay phase modulation, through calculating, the first phase modulation lightwave signal of generation,
3rd phase modulation lightwave signal ..., the 8th phase modulation lightwave signal with as the 6th of reference signal
The phase contrast of lightwave signal all becomes 0.
Step S6: converge the plurality of phase modulation lightwave signal to generate the second wavelength-division multiplex signals.
As a kind of implementation of the present invention, as it is shown in figure 1, optical multiplexer 6 includes
One outfan of multiple inputs, multiple inputs of optical multiplexer 6 and many light time delays
Line one_to_one corresponding is connected.Each bundle phase modulation lightwave signal is converged and generates by optical multiplexer 6
Two wavelength-division multiplex signals S2。
Preferably, the wavelength-division multiplex phase regulation method of the present embodiment, also include: storage is described
Phase contrast between phase place and the fixed phase of multiple signals of telecommunication.
The wavelength-division multiplex phase regulation method of the present embodiment and the phase regulator work of above-described embodiment
Make method to be similar to, do not repeat them here.
A kind of wavelength-division multiplex phase regulation method of embodiments of the invention, by wavelength-division multiplex signals
Middle multi beam lightwave signal adjusts and becomes the data message of carrying and have multiple phase-modulated lights of same phase
Ripple signal, and phase modulation lightwave signal is converged the wavelength-division multiplex signals that generation is new, utilize and once examine
Survey process just can complete the test to newly-generated wavelength-division multiplex signals, improves wavelength-division multiplex letter
Number testing efficiency.
The above, the only specific implementation of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (8)
1. a phase regulator, it is characterised in that include:
Light demultiplexer, including a multiple outfan of input, demultiplexes the first wavelength-division
Multiplexed signals, generates multiple lightwave signals of different wave length；
Multiple optical-electrical converters, multiple inputs of the plurality of optical-electrical converter are many with described light
Multiple outfan one_to_one corresponding of road demultiplexer are connected, and change the plurality of lightwave signal into multiple
The signal of telecommunication；
Phase detectors, including multiple phase detection units, the plurality of phase detection unit with
Multiple outfan one_to_one corresponding of the plurality of optical-electrical converter are connected, and detect the plurality of signal of telecommunication
Phase place；
Processor, including bus, multiple inputs of described processor are examined with the plurality of phase place
The multiple outfans surveying unit connect one to one, and produce according to the phase calculation of the plurality of signal of telecommunication
The time delay phase modulation desired phase of raw the plurality of lightwave signal is poor；
Light time delay module, including many optical delay lines, described many optical delay lines are many with described light
Multiple outfan one_to_one corresponding of road demultiplexer are connected, and the control letter of described many optical delay lines
Number input is connected with described processor respectively, poor, to institute according to described time delay phase modulation desired phase
State multiple lightwave signal and carry out time delay phase modulation to generate multiple phase modulation lightwave signals；
Optical multiplexer, including one outfan of multiple inputs, described optical multiplexer
Multiple inputs be connected with described many optical delay line one_to_one corresponding, converge the plurality of phase-modulated light
Ripple signal, generates the second wavelength-division multiplex signals；
Described processor produces the time delay of multiple lightwave signals according to the phase calculation of multiple signals of telecommunication
Phase modulation desired phase is poor, specifically includes:
The relatively phase place of the plurality of signal of telecommunication, using the phase place of the maximum described signal of telecommunication as ginseng
Examine phase place；
According to phase place and the described fixed phase of the plurality of signal of telecommunication, calculate the plurality of
Phase contrast between phase place and the described fixed phase of the signal of telecommunication.
Phase regulator the most according to claim 1, it is characterised in that the plurality of phase
Position detector unit is based on d type flip flop structure, the clock of signal of telecommunication input to described d type flip flop
Pin, in described d type flip flop D pin andPin is connected, the Q pin of described d type flip flop
For output pin.
Phase regulator the most according to claim 2, it is characterised in that described D triggers
The clock pins of device is connected with clock, and described clock is used for timing.
Phase regulator the most according to claim 1, it is characterised in that described smooth time delay
Line is micro-ring resonant cavity integrated waveguide optical delay line or tunable optical delay line.
Phase regulator the most according to claim 1, it is characterised in that also include:
Memorizer, is connected with described processor, for store the phase place of the plurality of signal of telecommunication with
Phase contrast between fixed phase.
Phase regulator the most according to claim 1, it is characterised in that many points of multiplexings of light
Device is the many division multiplexers of multilayer dielectric film light or the many division multiplexers of Waveguide array type light or optical fiber
The many division multiplexers of grating type light.
7. a wavelength-division multiplex phase regulation method, it is characterised in that including:
Demultiplexing first wave division multiplex signal, generates multiple lightwave signals of different wave length；
Change the plurality of lightwave signal into multiple signals of telecommunication；
Detect the phase place of the plurality of signal of telecommunication；
The time delay producing the plurality of lightwave signal according to the phase calculation of the plurality of signal of telecommunication is adjusted
Phase desired phase is poor；
Poor according to described time delay phase modulation desired phase, the plurality of lightwave signal is carried out time delay tune
To generate multiple phase modulation lightwave signals；
Converge the plurality of phase modulation lightwave signal to generate the second wavelength-division multiplex signals；
The described phase calculation according to multiple signals of telecommunication produces the time delay phase modulation institute of multiple lightwave signals
Need the step of phase contrast, specifically include:
The relatively phase place of the plurality of signal of telecommunication, using the phase place of the maximum signal of telecommunication as with reference to phase
Position；
According to phase place and the described fixed phase of the plurality of signal of telecommunication, calculate the plurality of
Phase contrast between phase place and the described fixed phase of the signal of telecommunication.
Wavelength-division multiplex phase regulation method the most according to claim 7, it is characterised in that
Also include:
Store the phase contrast between phase place and the fixed phase of the plurality of signal of telecommunication.
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| CN201310002350.7A CN103916194B (en) | 2013-01-05 | 2013-01-05 | Phase regulator and wavelength-division multiplex phase regulation method |
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|---|---|---|---|---|
| EP0738055A2 (en) * | 1995-04-14 | 1996-10-16 | Nippon Telegraph And Telephone Corporation | Phase synchronization system |
| CN1238600A (en) * | 1998-03-17 | 1999-12-15 | 摩托罗拉公司 | Phase detection apparatus |
| CN1309483A (en) * | 2000-02-16 | 2001-08-22 | 汤姆森特许公司 | Local oscillator frequency correction in quadrature frequency-division multiplex system |
| US6493125B1 (en) * | 1998-02-25 | 2002-12-10 | Oki Electric Industry Co., Ltd. | Apparatus for stabilizing light source frequency |
| CN1564468A (en) * | 2004-04-02 | 2005-01-12 | 清华大学 | Quadrature frequency division complex digita receiver |
| CN101783711A (en) * | 2009-01-15 | 2010-07-21 | 中国科学院西安光学精密机械研究所 | Demultiplexing method and system based on D trigger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5703957B2 (en) * | 2011-05-19 | 2015-04-22 | 富士通株式会社 | Optical packet signal transmission apparatus and WDM optical communication network |
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2013
- 2013-01-05 CN CN201310002350.7A patent/CN103916194B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0738055A2 (en) * | 1995-04-14 | 1996-10-16 | Nippon Telegraph And Telephone Corporation | Phase synchronization system |
| US6493125B1 (en) * | 1998-02-25 | 2002-12-10 | Oki Electric Industry Co., Ltd. | Apparatus for stabilizing light source frequency |
| CN1238600A (en) * | 1998-03-17 | 1999-12-15 | 摩托罗拉公司 | Phase detection apparatus |
| CN1309483A (en) * | 2000-02-16 | 2001-08-22 | 汤姆森特许公司 | Local oscillator frequency correction in quadrature frequency-division multiplex system |
| CN1564468A (en) * | 2004-04-02 | 2005-01-12 | 清华大学 | Quadrature frequency division complex digita receiver |
| CN101783711A (en) * | 2009-01-15 | 2010-07-21 | 中国科学院西安光学精密机械研究所 | Demultiplexing method and system based on D trigger |
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