CN202050420U

CN202050420U - Integrated multichannel wavelength division multiplexer

Info

Publication number: CN202050420U
Application number: CN2011201630575U
Authority: CN
Inventors: 陈思乡; 徐皓; 刘卫卫; 王斌
Original assignee: Shenzhen Neo Photonic Technology Co Ltd
Current assignee: Shenzhen Neo Photonic Technology Co Ltd
Priority date: 2011-05-20
Filing date: 2011-05-20
Publication date: 2011-11-23
Anticipated expiration: 2021-05-20

Abstract

The utility model discloses an integrated multichannel wavelength division multiplexer. Composite optical signals are divided into at least two channels of optical signals via a medium filtering plate. The integrated multichannel wavelength division multiplexer comprises a first one-dimensional optical waveguide array, a second one-dimensional optical waveguide array, a third one-dimensional optical waveguide array, a first collimating lens array, a second collimating lens array, a third collimating lens array and a medium optical filter. The first one-dimensional optical waveguide array, the first collimating lens array, the medium optical filter, the second collimating lens array and the second one-dimensional optical waveguide array are successively arranged into a line. The first one-dimensional optical waveguide array, the first collimating lens, the medium optical filter, the third collimating lens and the third one-dimensional optical waveguide array form a break angle with the medium optical filter being a turning point. The first one-dimensional optical waveguide array, the second one-dimensional optical waveguide array and the third one-dimensional optical waveguide array have multipath optical channels.

Description

Integrated multichannel wavelength division multiplexing device

Technical field

The utility model relates to Wavelength division multiplexer/demultiplexer spare.

Background technology

Along with the development of optical transmission research, wavelength-division multiplex technique (Wavelength Division Multiplexing) is to the capacity expansion and upgrading of network, and the development broadband services is excavated the fiber bandwidth ability, and realization ultrahigh speed communication etc. all has crucial meaning.Its basic principle is transmitting terminal wavelength optical signals is combined (multiplexing), and be coupled in the same optical fiber on the lightguide cable link and transmit, the signal of the different wave length of again these being combined at receiving terminal is (demultiplexing) separately, and be for further processing, recover to send into different terminals behind the original signal.

Existing wavelength division multiplex device adopts a filter plate that one road composite optical signal is resolved into two paths of signals, that is to say, multiplexing device can only multiplex/demultiplex one road light signal, when having the multichannel composite optical signal when needing multiplex/demultiplex, need use a plurality of multiplexing demultiplexing devices, multiplexing demultiplexing device needs more optical fiber to twine input and output again, makes that the volume of entire device is bigger, and cost is also high.

Summary of the invention

At MUX in the wavelength division multiplexing in the prior art and the high reason of DMUX device cost, the utility model has disclosed a kind of integrated multichannel wavelength division multiplexing device, by the dielectric filter sheet composite optical signal is separated into two ways of optical signals at least, comprise the first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array, first collimator lens array, second collimator lens array and the 3rd collimator lens array, and a dielectric filter.The first one dimension optical waveguide array, first collimator lens array, dielectric filter, second collimator lens array and the second one dimension optical waveguide array sequence arrangement are in line.The first one dimension optical waveguide array, first collimating lens, dielectric filter, the 3rd collimator lens array and the 3rd one dimension optical waveguide array are that breakover point forms knuckle with the dielectric filter place.The first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array have the multichannel optical channel.

By the disclosed integrated multichannel wavelength division multiplexing device of the utility model, not only can reduce cost, also can reduce the volume of device; Because optical channel is integrated in the one dimension optical waveguide array stable performance.

Description of drawings

Fig. 1 is the stereogram of disclosed integrated multichannel wavelength division multiplexing device first execution mode of the utility model.

Fig. 2 is the front elevation of integrated multichannel wavelength division multiplexing device shown in Figure 1.

Fig. 3 is the stereogram of second kind of execution mode of integrated multichannel wavelength division multiplexing device.

Embodiment

Below in conjunction with principle schematic, this detection method is elaborated.

As shown in Figure 1, be the stereogram of first kind of execution mode of the disclosed integrated multichannel WDM of the utility model.Multichannel WDM comprises the first one dimension optical waveguide array 101, the second one dimension optical waveguide array 102 and the 3rd one dimension optical waveguide array 103, first collimator lens array 104, second collimator lens array 105 and the 3rd collimator lens array 106, first triangular prism 107 and second triangular prism 108, and dielectric filter sheet 109.Dielectric filter sheet 109 is bonded in or directly is coated in the surface between first triangular prism 107 or second triangular prism 108,109 light-wave transmissions that allow to be in the specific wavelength interval of this filter plate.The first one dimension optical waveguide array 101, first collimator lens array 104, dielectric filter 109, second collimator lens array 105 and the second one dimension optical waveguide array, 102 sequence arrangement are in line.The first one dimension optical waveguide array 101, first collimating lens 104, dielectric filter 109, the 3rd collimating lens 106 and the 3rd one dimension optical waveguide array 103 are that breakover point forms knuckle with dielectric filter 109.The first one dimension optical waveguide array 101, the second one dimension optical waveguide array 102 and the 3rd one dimension optical waveguide array 103 have the multichannel optical channel.

As shown in Figure 2, be the front elevation of the disclosed multichannel WDM of the utility model.From the figure as can be seen, all there is an included angle between the dielectric filter and first collimating lens, second collimating lens and the 3rd collimating lens, this angular range is 20 °-160 °, included angle is 45 when spending, effect is than good, the first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array are the center with described dielectric filter at this moment, form the T font and arrange.Eight road optical fiber in the first one dimension optical waveguide array 101 are all imported composite optical signal λ, and (λ 1, λ 2), through first collimator lens array 104 converge the collimation and first triangular prism 107 after arrive at dielectric filter sheet 109, its medium wavelength is that the part optical signals of λ 1 can be passed through this dielectric filter sheet 109, through the collimation that converges of second triangular prism 108 and second collimator lens array 105, from 102 outputs of the second one dimension optical waveguide array; And wavelength to be the part optical signals of λ 2 can not pass through this dielectric filter sheet 109, turned back by dielectric filter sheet 109, through the collimation that converges of second triangular prism 107 and the 3rd collimator lens array 106, from 103 outputs of the 3rd one dimension optical waveguide array.

As shown in Figure 3, be second kind of execution mode of multichannel WDM.In the present embodiment, the number of fibers of setting the first one dimension optical waveguide array 301 is 4 the tunnel, be respectively

optical fiber

3011,3012,3013,3014, import 4 groups of composite optical signal λ 12(λ 1 respectively with different wave length, λ 2), λ 34(λ 3, λ 4), λ 56(λ 5, λ 6), λ 78(λ 7, λ 8).Filter 309 adopts the multistage filter plate with different

optical filtering zone

3091,3092,3093,3094, wherein, optical filtering zone 3091 can comprise the light signal of λ 1 by range of wavelengths, optical filtering zone 3092 can comprise the light signal of λ 3 by range of wavelengths, optical filtering zone 3093 can comprise the light signal of λ 5 by range of wavelengths, and the zone 3094 of filtering can comprise the light signal of λ 7 by range of wavelengths.

As shown in Figure 3, the light signal λ 12(λ 1 of optical fiber 3011 inputs in the first one dimension optical waveguide array 301, λ 2) through arriving at the zone 3091 of filtering behind first collimator lens array 304 and first triangular prism 307, wherein, wavelength is that the light signal of λ 1 passes through the zone 3091 of filtering, through second triangular prism 308 and second collimator lens array 305, from optical fiber 3021 outputs of the second one dimension optical waveguide array 302; And wavelength to be the part optical signals of λ 2 can not pass through filter field 3091, through first triangular prism 307 and the 3rd collimator lens array 306, from optical fiber 3031 outputs of the 3rd one dimension optical waveguide array 303.Same, the light signal λ 34(λ 3 of optical fiber 3012 inputs, λ 4) optical channel arrive at the zone 3092 of filtering, wherein, wavelength is that the light signal of λ 3 is from optical fiber 3022 outputs; Wavelength is that the light signal of λ 4 is exported from optical fiber 3032; The light signal λ 56(λ 5 of optical fiber 3013 input, λ 6) optical channel arrive at the zone 3093 of filtering, wherein, wavelength is that the light signal of λ 5 is from optical fiber 3023 outputs; Wavelength is that the light signal of λ 6 is exported from optical fiber 3033; The light signal λ 78(λ 7 of optical fiber 3014 input, λ 8) optical channel arrive at the zone 3094 of filtering, wherein, wavelength is that the light signal of λ 7 is from optical fiber 3024 outputs; Wavelength is that the light signal of λ 8 is exported from optical fiber 3034.In the above execution mode, the transmission direction of light signal is reversible.

When the first one dimension optical waveguide array 301 needs more multichannel composite optical signal input, as long as the number that increases the quantity of optical channel and optical fiber and correspondingly increase the zone of filtering.

In other execution mode, under the situation that precision conditions allows, first triangular prism 107 and the 2 108 also can be default so that reduce cost.The shape of first collimator lens array 104, second collimator lens array 105 and the 3rd collimator lens array 106 also not necessarily is confined to the cuboid in the present invention's diagram, and it can be combined into the function that the waveguide collimating lens is finished fiber waveguide and collimating lens with the first one dimension optical channel 101, the second one dimension optical channel 102, the 3rd one dimension optical channel 103.

In actual applications, the wavelength interval that is in the composite optical signal in the same optical-fibre channel preferably more greatly so that the dielectric filter sheet can be separated the composite optical signal that enters better.As composite optical signal λ 12(λ 1, λ 2) in, the wavelength of λ 1 can be chosen 1567.95nm, then the wavelength of λ 2 can be chosen 1493.73nm, and composite optical signal λ 12(λ 1, λ 2) the optical filtering zone 3091 that must pass through can be the interval of 1490.76nm～1512.58nm by range of wavelengths.

Claims

1. integrated multichannel wavelength division multiplexing device, by the dielectric filter sheet composite optical signal is separated into two ways of optical signals at least, it is characterized in that, described integrated multichannel wavelength division multiplexing device comprises the first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array, first collimator lens array, second collimator lens array and the 3rd collimator lens array, and a dielectric filter; The described first one dimension optical waveguide array, first collimating lens, dielectric filter, second collimating lens and the second one dimension optical waveguide array sequence arrangement are in line, and the described first one dimension optical waveguide array, first collimating lens, dielectric filter, the 3rd collimating lens and the 3rd one dimension optical waveguide array are that breakover point forms knuckle with the dielectric filter place; The described first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array have the multichannel optical channel.

2. integrated multichannel wavelength division multiplexing device as claimed in claim 1, it is characterized in that, the multichannel optical channel input composite optical signal of the described first one dimension optical waveguide array, described second one dimension optical waveguide array and the 3rd one dimension optical waveguide array comprise multichannel optical channel output light signal; Described dielectric filter filters from described first one dimension optical channel input and the composite optical signal behind first collimator lens array collimation, after collimating through second collimating lens by the part optical signals of dielectric filter in the composite optical signal, export through the second one dimension optical channel; To can not turn back and, export by the part optical signals of dielectric filter in the composite optical signal through the 3rd one dimension optical channel through behind the 3rd collimator lens array collimation; Moving towards of above-mentioned light signal is reversible.

3. integrated multichannel wavelength division multiplexing device as claimed in claim 2 is characterized in that, all having an included angle, this angular range between the described dielectric filter and first collimating lens, second collimating lens and the 3rd collimating lens is 20 °-160 °.

4. integrated multichannel wavelength division multiplexing device as claimed in claim 3, it is characterized in that, described dielectric filter included angle is 45 when spending, the described first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array are the center with described dielectric filter, form the T font and arrange.

5. integrated multichannel wavelength division multiplexing device as claimed in claim 4 is characterized in that, described integrated multichannel wavelength division multiplexing device also comprises first triangular prism and second triangular prism, is placed on the both sides of described dielectric filter.

6. as claim 4 or the described integrated multichannel wavelength division multiplexing device of claim 5, it is characterized in that, the described first one dimension optical waveguide array, the second one dimension optical waveguide array and the 3rd one dimension optical waveguide array have multi-channel optical fibre, can input wavelength interval identical composite optical signal or range of wavelengths composite optical signal inequality.

7. integrated multichannel wavelength division multiplexing device as claimed in claim 6 is characterized in that, described dielectric filter has different optical filtering zones and is used to filter different composite optical signals according to the difference of the wave-length coverage of the pairing composite optical signal that arrives at.