CN102902030A - Energy transfer optical cable for high-power laser transmission - Google Patents
Energy transfer optical cable for high-power laser transmission Download PDFInfo
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- CN102902030A CN102902030A CN2011102154212A CN201110215421A CN102902030A CN 102902030 A CN102902030 A CN 102902030A CN 2011102154212 A CN2011102154212 A CN 2011102154212A CN 201110215421 A CN201110215421 A CN 201110215421A CN 102902030 A CN102902030 A CN 102902030A
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Abstract
The invention provides an energy transfer optical cable for high-power laser transmission. The energy transfer optical cable for high-power laser transmission comprises an energy transfer optical fiber, one end of the optical fiber is embedded into a first connector while the other end of the optical fiber is embedded into a second connector, and an optical transmission section is wrapped by a metal sleeve. The first connector comprises a metal tube, a transparent glass end cap, a metal plate, glass guide tubes, a water inlet tube, a water outlet tube and a temperature sensor, wherein the transparent glass end cap and the metal plate are used for sealing two ends of the metal tube respectively, the glass guide tubes are fixed on the metal plate, the water inlet tube penetrates through the walls of the metal tube and one glass guide tube, the water outlet tube penetrates through the wall of the metal tube, and the temperature sensor is arranged in the outer wall of the metal tube. Some components are covered by optical absorption materials. One end of the energy transfer optical fiber penetrates through the metal plate along the metal tube axis to extend and is coupled with the transparent glass end cap, the temperature sensor and/or the metal sleeve wrapping the optical transmission section of the optical fiber are connected onto a controller, and the controller cuts off output of a laser device when a temperature value detected by the temperature sensor is larger than a first predetermined threshold value or when resistance of the metal sleeve is larger than a second predetermined threshold value.
Description
Technical field
The invention belongs to the optical transport technology field, specifically, relating to a kind of biography for the high power laser transmission can optical cable.
Background technology
Along with the development of high power laser technology, high power laser is more and more noticeable in the application of the aspects such as industrial processes, weaponry and medicine equipment.The transmission problem of high power laser is one of key issue of high power laser application facet.Pass optical cable to be the main path that addresses this problem.
At present, existing biography can the optical cable maximum can be transmitted average power at the laser of kilowatt magnitude.Can produce very high heat when transmitting in the fiber cores of powerful like this laser in passing the energy optical cable, might damage biography energy optical cable and cause security incident.Thereby avoid damaging that pass can optical cable in order to reduce high power laser passing the heat that produces in can optical cable, passing and to adopt various measures to dispel the heat in the optical cable.For example, the LLK-B biography energy optical cable of Germany Trumpf company carries out the frosted processing to the fibre core covering of optical cable, so that the light that is not coupled in the fibre core scatters in the air when being transferred to covering-Air Interface, thereby avoided being absorbed by the coat in the optical cable and causing that temperature raises so that burn out optical cable.But because the surface area of fibre core covering is less, thereby light scattering and insufficient.The optical fiber that also has some energy-transmission optic fibres or be included in the fiber laser dispels the heat by the complicated water cooling plant of configuration around fibre core, such as disclosed in the patent documentations such as China Patent Publication No. 2343598, publication number 1523384, publication number 101640364, publication number 201294327.In addition, U.S. Patent No. 5497442 discloses a kind of cable core structure of the biography energy optical cable for transmitting high power laser, wherein, uses to wrap in the working condition monitoring circuit that the outer metal level of fibre core consists of this optical cable.But at present the methods of electroless platings that adopt form metal level more outside fibre core, and this class methods complex manufacturing technology and have chemical contamination is unfavorable for reducing cost and protection of the environment.
Summary of the invention
In order to obtain to have the biography energy optical cable of abundant heat-sinking capability with the transmission high power laser, simultaneously for reduce the cost of manufacture that biography can optical cable and improve pass can optical cable safety in utilization, need a kind of simple in structure, with safety and there is the biography energy optical cable of very strong heat-sinking capability transmit high power laser.The object of the present invention is to provide a kind of biography for high power laser transmission can optical cable, this pass can optical cable not only cost low, use safety, and can dispel the heat fully to guarantee that this biographys energy optical cable transmit high power laser continuously for a long time.
To achieve these goals, the invention provides a kind of biography energy optical cable for the high power laser transmission, this biography can comprise one section energy-transmission optic fibre by optical cable, one end of this section energy-transmission optic fibre embeds in the first energy-transmission optic fibre joint that is coupled with the laser emitting end, the other end of this section energy-transmission optic fibre embeds in the second energy-transmission optic fibre joint, is surrounded by metallic sheath around the optical transmission section part outside the described two ends of this section energy-transmission optic fibre.Described the first energy-transmission optic fibre joint comprises: metal tube; Be fixed on hermetically the clear glass end cap in the end port of this metal tube; Be fixed on hermetically the sheet metal in the other end port of this metal tube; Be fixed on described sheet metal in the face of on the side of described clear glass end cap and be parallel to the grass tube of described metal tube Axis Extension; Near described sheet metal in the face of the surface of a side of described clear glass end cap and pass the water inlet pipe of described metal tube tube wall and described grass tube tube wall; Near described sheet metal in the face of the surface of a side of described clear glass end cap and pass the rising pipe of described metal tube tube wall; And be arranged on temperature sensor in the described metal tube outer wall.Simultaneously, a described end of described energy-transmission optic fibre passes described sheet metal and extends described grass tube is inner along the axis of described metal tube, the end face of this end and the coupling of described clear glass end cap, the part between described clear glass end cap and described sheet metal of a described end of described energy-transmission optic fibre is closely overlapped the light scattering pipe is arranged.In addition, described temperature sensor and/or wrap in optical transmission section part outside the described two ends of described energy-transmission optic fibre around described metallic sheath be connected on the controller, so that the value of the temperature of surveying when described temperature sensor is greater than the first predetermined threshold or when the resistance of described metallic sheath during greater than the second predetermined threshold, described controller cuts off the output of described laser instrument.
Preferably, the end face with an end described laser emitting end coupling described clear glass end cap can be coated with antireflection film, and the side surface with an end described energy-transmission optic fibre coupling described clear glass end cap can carry out frosted to be processed.
Preferably, side in the face of described clear glass end cap of the described sheet metal in described the first energy-transmission optic fibre joint can also be provided with glass plate, this glass plate can with described sheet metal close contact, and this glass plate and surface described sheet metal close contact can be carried out frosted and processed, and described grass tube can be fixed on the described sheet metal by being combined with this glass plate.
Preferably, described light scattering pipe can be made by glass tube, and this light scattering pipe can be bonding by the covering of bonding agent and described energy-transmission optic fibre, and the outer wall of this light scattering pipe can carry out the frosted processing.
Preferably, the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described sheet metal in the face of the one or more walls in the inwall of the wall of a side of described clear glass end cap and described metal tube on can be coated be used to the light absorbing material that absorbs the light in one or more wavelength coverages.Perhaps, preferably, can be coated be used to the light absorbing material that absorbs the light in one or more wavelength coverages on the one or more walls in the inwall of the wall that contacts with described sheet metal of the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described glass plate and described metal tube.Preferably, described light absorbing material can comprise one or more layers light absorbing material.
In addition, preferably, wrap in optical transmission section part outside the described two ends of described energy-transmission optic fibre around described metallic sheath can comprise the first metallic sheath that is enclosed within on the described energy-transmission optic fibre and be enclosed within the second metallic sheath on described the first metallic sheath, and can be filled with electrically insulating material between described the first metallic sheath and described the second metallic sheath, described the second metallic sheath can be fixedly connected with the described other end of the described metal tube of described the first energy-transmission optic fibre joint.
Moreover, preferably, the structure of described the second energy-transmission optic fibre joint can be identical with the structure of described the first energy-transmission optic fibre joint, and the combination of the described other end of described the second energy-transmission optic fibre joint and described energy-transmission optic fibre can be identical with the combination of the described end of described the first energy-transmission optic fibre joint and described energy-transmission optic fibre.Further preferably, the temperature sensor on described the second energy-transmission optic fibre joint can be connected on the described controller, so that the temperature of surveying when this temperature sensor is during greater than the 3rd predetermined threshold, this controller can cut off the output of described laser instrument.
As mentioned above, at the biography energy optical cable for the high power laser transmission of the present invention, adopt the light scattering pipe to increase the scattering volume of fibre core covering or area and the outside surface of the outside surface of the side surface of clear glass end cap, fibre core covering and light scattering pipe is carried out frosted process the scattering that increases the laser that is not coupled into fibre core, a bit produce high temperature thereby these light can be gathered in; The coupled end and the optical transmission section that adopt glass plate/sheet metal will pass the energy optical cable separate, so that the laser that is not coupled into fibre core in the described coupled end can not be radiated on the optical cable of optical transmission section; Cover the light absorbing material that is used for absorbing the light in one or more wavelength coverages by the one or more walls in the inwall of the wall of the inwall of the outer wall of light scattering pipe, grass tube and/or outer wall, described sheet metal or glass plate and described metal tube, the scattered light that disperses throughout absorbing laser, thus hot gathering reduced; Utilize metal tube, clear glass end cap, glass plate/sheet metal to consist of cavity and utilize the guiding of grass tube do that current are taken away fully and be gathered in the interior heat of energy-transmission optic fibre joint; Utilize temperature sensor, wrap in optical transmission section part outside the two ends of described energy-transmission optic fibre around metallic sheath and controller consist of the temperature monitoring unit, cut off the output of laser instrument when too high with the temperature of assurance in passing the energy optical cable, thereby guaranteed the safe handling of this biography energy optical cable.
Description of drawings
Fig. 1 is the cut-open view of the structure of optically-coupled end that the described biography for high power laser transmission of one embodiment of the present of invention can optical cable and optical transmission section;
Fig. 2 is the structure enlarged drawing of the optically-coupled end of the biography energy optical cable that is used for the high power laser transmission among Fig. 1; And
Fig. 3 is energy-transmission optic fibre that the described biography for high power laser transmission of one embodiment of the present of invention can optical cable and the structural representation of light scattering pipe.
Embodiment
The embodiment that biography for high power laser transmission of the present invention can optical cable is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, in the situation that without departing from the spirit and scope of the present invention, can revise described embodiment with various mode or its combination.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used for the protection domain of restriction claim.In addition, in this manual, accompanying drawing draws not in scale, and identical Reference numeral represents identical part.
Biography for the high power laser transmission of the present invention can comprise one section energy-transmission optic fibre by optical cable, one end of this section energy-transmission optic fibre embeds in the first energy-transmission optic fibre joint that is coupled with the laser emitting end, thereby consist of the optically-coupled end of this biography energy optical cable, the other end of this section energy-transmission optic fibre embeds in the second energy-transmission optic fibre joint, thereby form the light output end of this biography energy optical cable, be surrounded by metallic sheath around the part outside the described two ends of this section energy-transmission optic fibre, consisted of the optical transmission section part of this biography energy optical cable.Fig. 1 is cut-open view, show optically-coupled end that the described biography for high power laser transmission of one embodiment of the present of invention can optical cable and the structure of optical transmission section, wherein, an end of described one section energy-transmission optic fibre 10 and the first energy-transmission optic fibre joint 20 combine the optically-coupled end that consists of biography energy optical cable 100.Part outside the optically-coupled end of the biography energy optical cable 100 among Fig. 1 is the optical transmission section part, this optical transmission section part is by energy-transmission optic fibre 10 and wrap on the energy-transmission optic fibre 10 one or more layers and be made of the spaced metallic sheath 30 of insulating medium, and the light output end of the biography that the other end of energy-transmission optic fibre 10 and described the second energy-transmission optic fibre junction consist of altogether energy optical cable 100 is not shown in Fig. 1.Fig. 2 is the structure enlarged drawing of the optically-coupled end of the biography energy optical cable 100 among Fig. 1, wherein for the sake of brevity, temperature sensor in Fig. 2 among not shown Fig. 1 and connection wire (back will be described), in addition, for the sake of clarity, the dimension scale of the clear glass end cap among Fig. 2 has been exaggerated.Fig. 3 be the biography among Fig. 1 in can optical cable 100 energy-transmission optic fibre 10 and the structural representation of light scattering pipe.
As shown in Figure 1, the described biography for high power laser transmission of one embodiment of the present of invention can optical cable 100 comprise energy-transmission optic fibre 10, the first energy-transmission optic fibre joint 20, by insulating medium spaced metallic sheath 30 and the second energy-transmission optic fibre joint (not shown).
Referring to Fig. 2 and Fig. 3, energy-transmission optic fibre 10 comprises fibre core 11 and covering 12, and the outside surface 12a of covering can process through frosted.At the energy-transmission optic fibre 10 that passes optically-coupled end that can optical cable 100 of the present invention (namely, the clear glass end cap that will describe in the back and the fiber section between the sheet metal) the outside surface of covering 12 light scattering pipe 13 is set, light scattering pipe 13 can be made by glass tube (for example quartz ampoule), its refractive index greater than or be approximately equal to the refractive index of the covering 12 of optical fiber 10, its outside surface 13a processes through frosted.Light scattering pipe 13 can be bonded together by bonding agent 14 with the covering 12 of energy-transmission optic fibre 10.In some embodiments of the invention, in the frosted of light scattering pipe 13 outer wall on can also be coated be used to the light absorbing material 15 that absorbs the light in one or more wavelength coverages, this light absorbing material 15 can comprise one or more layers light absorbing material.
Referring again to Fig. 1 and Fig. 2, the first embedded energy-transmission optic fibre joint 20 of an end of energy-transmission optic fibre 10 comprises metal tube 21, be fixed on hermetically the clear glass end cap 22 in the end port of this metal tube 21, fix hermetically the sheet metal 23 in the other end port of this metal tube, be fixed on sheet metal 23 in the face of on the surface of a side of clear glass end cap 22 and be parallel to the grass tube 24 of metal tube 21 Axis Extensions, near sheet metal 23 in the face of the surface of a side of clear glass end cap 22 and pass the water inlet pipe 25 of metal tube 21 tube walls and grass tube 24 tube walls, near sheet metal 23 in the face of the surface of a side of clear glass end cap 22 and pass the rising pipe 26 of metal tube 21 tube walls; And be arranged on temperature sensor 28 in metal tube 21 outer walls.
A described end of energy-transmission optic fibre 10 passes sheet metal 23 and extends the end face of this end and 22 couplings of clear glass end cap in grass tube 24 inside along the axis of metal tube 21.In addition, as mentioned above, closely overlapping in the part between clear glass end cap 22 and sheet metal 23 of this end of energy-transmission optic fibre 10 has light scattering pipe 13.
In described the first energy-transmission optic fibre joint 20, according to some embodiments of the present invention, metal tube 21 and sheet metal 23 can be made by metal or metal alloy such as copper, aluminium or stainless steel in the above.
According to some embodiments of the present invention, clear glass end cap 22 can be quartzy end cap, and it can be fixed in the port of an end of metal tube 21 hermetically by bonding agent 22a.The end face 22b of one end of clear glass end cap 22 can be coated with antireflection film, the exit end (not shown) coupling of this end face 22b and laser instrument.The end face 22c of the other end of clear glass end cap 22 can with the end face coupling of the described end of energy-transmission optic fibre 10, the side surface 22d of this end can carry out frosted to be processed.
When on the end face 22b of laser beam irradiation at clear glass end cap 22 that laser instrument penetrates, owing to be coated with antireflection film on this end face 22b, so this laser beam enters in the clear glass end cap 22 in the lowland with regard to no reflection events or reflectivity very much.As shown in Figure 2, some laser beam A shines on the fibre core 11 of energy-transmission optic fibre 10 and its incident angle meets the numerical aperture of energy-transmission optic fibre 10, and therefore, these laser beam A just is coupled in the energy-transmission optic fibre 10, in the at the interface generation total reflection of fibre core 11 and covering 12, thus forward transmission.Some laser beam B also shines on the fibre core 11 of energy-transmission optic fibre 10, but its incident angle does not meet the numerical aperture of energy-transmission optic fibre 10, therefore enter in the optical fiber 10 laser beam B some enter in the covering 12 in the refraction of the interface of fibre core 11 and covering 12.Some laser beam C then shines directly on the covering 12, enters into covering 12 transmission.Since the refractive index of the light scattering pipe 13 of covering 12 outsides greater than or be approximately equal to the refractive index of optical fiber 10 coverings 12, so laser beam B and the C of transmission can enter into light scattering pipe 13 in the outside surface 12a of the covering 12 of processing through frosted place's scattering in covering 12, and then enter in the grass tube 24 in the outside surface 13a place's scattering through frosted was processed of light scattering pipe 13.Like this, because the outside surface 12a of fibre core covering 12 and the outside surface 13b of light scattering pipe 13 have carried out the frosted processing, thereby have increased the scattering of the laser that is not coupled into fibre core greatly, this part light can be gathered in a bit produce high temperature.In addition, the light path disalignment of some laser beam D shines on the conical lateral surface 22d of clear glass end cap 22, because side surface 22d has passed through the frosted processing, therefore laser beam D can be scattered out.
No matter be the light that from energy-transmission optic fibre 10, scatters out, or finally all will directly or pass grass tube 24 by metal tube 21 and sheet metal 23 absorptions and be converted into heat from the light that the side surface 22d of clear glass end cap 22 scatters out.According to some embodiments of the present invention, side in the face of clear glass end cap 22 of the sheet metal 23 in the first energy-transmission optic fibre joint 20 can also be provided with glass plate 23a, this glass plate 23a and sheet metal 23 close contacts, and the frosted processing has been carried out on the surface with sheet metal 23 close contacts of this glass plate 23a.Like this can be to might carrying out scattering from the light beam that laser instrument directly is mapped on the sheet metal 23, in case stop loss bad sheet metal 23, thus prevent from damaging the optical cable of sheet metal 23 back.
In order to disperse to absorb these scattered lights to avoid the gathering of heat, in some embodiments of the invention, the inner and outer wall of the outer wall of light scattering pipe 13, grass tube 24, sheet metal 23 in the face of the wall of a side of clear glass end cap 22 (perhaps, the wall that contacts with sheet metal 23 of glass plate 23a) covers the light absorbing material that is used for absorbing the light in one or more wavelength coverages and on the one or more walls in the inwall of metal tube 21, wherein, this light absorbing material can comprise one or more layers light absorbing material.
The power working time higher or energy-transmission optic fibre 10 of the laser beam of transmitting when energy-transmission optic fibre 10 needs very strong cooling measure that the heat of assembling in the first energy-transmission optic fibre joint 20 is distributed when longer.At the biography energy optical cable 100 for the high power laser transmission of the present invention, metal tube 21, clear glass end cap 22, sheet metal 23 have consisted of a cavity, are provided with water inlet pipe 25 and rising pipe 26 at the near surface in the face of a side of clear glass end cap 22 of sheet metal 23.Chilled water can flow into described cavity from water inlet pipe 25, then takes away light absorbing material on light absorbing material, metal tube 21 and the wall thereof on the inside and outside wall of light absorbing material, grass tube 24 that may be on light scattering pipe 13 outer walls or the one or more local heat that produces in the light absorbing material on sheet metal 23 and the wall thereof and flows out from rising pipe 26.In order to make chilled water fully mobile in described cavity, sheet metal 23 in the face of the surface of a side of clear glass end cap 22 on the grass tube 24 that is parallel to metal tube 21 Axis Extensions is set regularly, and make water inlet pipe 25 pass metal tube 21 tube walls and grass tube 24 tube walls, make 26 of rising pipes pass metal tube 21 tube walls.Like this, the chilled water that flows into the described cavity from water inlet pipe 25 will flow out from rising pipe 26 after the direction shown in the hollow arrow among Fig. 2 flows in described cavity fully.In this case, the side surface 22d of clear glass end cap 22 is conical design, and this has not only increased the contact area of itself and chilled water, thereby is conducive to the heat radiation of clear glass end cap 22, and make chilled water be difficult for forming turbulent flow, in time flow away thereby be conducive to chilled water.In addition, also can design the shape of grass tube 24, so that the water flow field in the described cavity has velocity distribution, some determines the heat-sinking capability of position in the described cavity thereby can further improve.
Referring again to Fig. 1, can can use safely by optical cable in order to make biography of the present invention, in one aspect, the described biography for high power laser transmission of one embodiment of the present of invention can optical cable 100 first pass on the tube wall of metal tube 21 that can fiber cable joint 20 and also be provided with one or more temperature sensors 28, be used for monitoring the temperature of metal tube 21.Temperature sensor 28 is connected with controller, so that because laser power is too large or the working time is oversize or since laser instrument when passing can the optical cable coupling not good value that causes the temperature that detects that the laser leakage makes temperature sensor 28 greater than the first predetermined threshold, described controller just cuts off the output of described laser instrument.
In Fig. 1, the part outside the optically-coupled end of biography energy optical cable 100 is the optical transmission section part, and this optical transmission section part is made of energy-transmission optic fibre 10 and the metallic sheath 30 that wraps on the energy-transmission optic fibre 10.This metallic sheath 30 can only comprise the first metallic sheath 31 that is enclosed within on the energy-transmission optic fibre 10, second metallic sheath 33 that also can comprise as shown in Figure 1 the first metallic sheath 31 and separate by insulating medium 32 and the first metallic sheath 31, wherein the second metallic sheath 33 is fixedly connected with the described other end of the metal tube 21 of the first energy-transmission optic fibre joint 20.Preferably, the second metallic sheath 33 is the flexible metal(lic) conduits that turn to.
Can use safely by optical cable in order to make biography of the present invention, in yet another aspect, the two ends that are enclosed within the first metallic sheath 31 on the energy-transmission optic fibre 10 of the optical transmission section that the described biography for high power laser transmission of one embodiment of the present of invention can optical cable 100 are connected to described controller.If the power at the laser of this optical transmission section transmission is too large, to such an extent as to burn out the first metallic sheath 31, resistance will become large between the described two ends of this first metallic sheath 31 so.When the resistance between the described two ends of the first metallic sheath 31 during greater than the second predetermined threshold, described controller will cut off the output of laser instrument.
Although in Fig. 1-Fig. 3, do not illustrate, one embodiment of the present of invention are described pass can optical cable 100 the other end relative with its optically-coupled end be light output end, the light output end is being coupled to the relative other end of an end of clear glass end cap 22 with it and embedding in the second energy-transmission optic fibre joint and form of energy-transmission optic fibre 10.In one embodiment of the invention, the structure of this second energy-transmission optic fibre joint can be identical with the structure of the first energy-transmission optic fibre joint 20, and the combination of this second energy-transmission optic fibre joint and the described other end of energy-transmission optic fibre 10 is identical with the combination with ends 22 couplings of clear glass end cap the first energy-transmission optic fibre joint 20 and energy-transmission optic fibre 10.In other words, in one embodiment of the invention, the biography that is used for the high power laser transmission can have the head and the tail symmetrical structure by optical cable 100.Temperature sensor on described the second energy-transmission optic fibre joint is connected on the described controller, so that the value of the temperature that detects when this temperature sensor is during greater than the 3rd predetermined threshold, this controller cuts off the output of described laser instrument.In use, from pass can optical cable 100 outputs high power laser illumination on object, at this moment, the reflected light that has a some returns biography can optical cable 100, thereby the temperature of the light output end that biography can optical cable 100 is raise.Therefore, the clear glass end cap of the light output end of biography energy optical cable 100 need not plate antireflection film.In addition, also can according to circumstances design the light-emitting face shape of this clear glass end cap, so that the light that reflects from object is not easy to be coupled into the described light output end of biography energy optical cable 100.Certainly, according to different application, according to catoptrical power, can also adopt simpler the second energy-transmission optic fibre joint of structure, for example, just the light output end of energy-transmission optic fibre is sealed in the second energy-transmission optic fibre joint that with dust around reducing fiber end face is polluted in the glass cap.
Should note, functional circuit can directly or (for example be passed through in the two ends of the metallic sheath (perhaps the first metallic sheath) of the optical transmission section of the temperature sensor on the first energy-transmission optic fibre joint among the described embodiment of the present invention, the temperature sensor on the second energy-transmission optic fibre joint and biography energy optical cable, amplifier, signal converter, comparer, trigger etc.) indirectly be connected in the described controller, thus monitoring and the control of realization temperature.Comprise that said temperature sensor, optical transmission section metallic sheath, controller and other function electric device are that those of skill in the art are easy to conceive with the structure of the circuit of realizing temp monitoring function of the present invention, and can have multiple modification, just it has not been described in detail here.Need to prove, as shown in Figure 1, the wire 28a that links to each other with described temperature sensor 28 and the wire 31a that links to each other with described optical transmission section metallic sheath 31 can be by in the metallic channels on the tube wall that embeds the metal tube 21 in the first energy-transmission optic fibre joint 20 for example or imbed in the insulation course 32 of described optical transmission section and come cabling.Obviously, other cabling mode also is possible.
As mentioned above, the described structure that adopts for the biography energy optical cable of high power laser transmission of embodiments of the invention makes laser pass and can produce as few as possible heat by optical cable, the place that produces heat is disperseed as much as possible, even laser is passing and can produce heat in the optical cable, heat is pulled away as early as possible, in addition, in case biography can be quit work by optical cable.Like this, biography of the present invention can not only can be transmitted high power laser by optical cable, and in use safe and reliable.In addition, a plurality of parts that pass in the energy optical cable of the present invention have a plurality of functions, so just make the structure of this biography energy optical cable compacter and simple, have reduced manufacturing cost.
As above having described the biography for the high power laser transmission of the present invention with reference to accompanying drawing in the mode of example can optical cable.But, it will be appreciated by those skilled in the art that for the described biography energy optical cable for the high power laser transmission of the invention described above, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. one kind is used for the biography energy optical cable that high power laser transmits, comprise one section energy-transmission optic fibre, one end of this section energy-transmission optic fibre embeds in the first energy-transmission optic fibre joint that is coupled with the laser emitting end, the other end of this section energy-transmission optic fibre embeds in the second energy-transmission optic fibre joint, be surrounded by metallic sheath around the optical transmission section part outside the described two ends of this section energy-transmission optic fibre, described the first energy-transmission optic fibre joint comprises:
Metal tube;
Be fixed on hermetically the clear glass end cap in the end port of this metal tube;
Be fixed on hermetically the sheet metal in the other end port of this metal tube;
Be fixed on described sheet metal in the face of on the side of described clear glass end cap and be parallel to the grass tube of described metal tube Axis Extension;
Near described sheet metal in the face of the surface of a side of described clear glass end cap and pass the water inlet pipe of described metal tube tube wall and described grass tube tube wall;
Near described sheet metal in the face of the surface of a side of described clear glass end cap and pass the rising pipe of described metal tube tube wall; And
Be arranged on the temperature sensor in the described metal tube outer wall,
Wherein, a described end of described energy-transmission optic fibre passes described sheet metal and extends described grass tube is inner along the axis of described metal tube, the end face of this end and the coupling of described clear glass end cap, the part between described clear glass end cap and described sheet metal of a described end of described energy-transmission optic fibre is closely overlapped the light scattering pipe is arranged
Described temperature sensor and/or wrap in optical transmission section part outside the described two ends of described energy-transmission optic fibre around described metallic sheath be connected on the controller, so that the value of the temperature of surveying when described temperature sensor is greater than the first predetermined threshold or when the resistance of described metallic sheath during greater than the second predetermined threshold, described controller cuts off the output of described laser instrument.
2. the biography for high power laser transmission according to claim 1 can optical cable, wherein, end face with an end described laser emitting end coupling described clear glass end cap is coated with antireflection film, and the side surface with an end described energy-transmission optic fibre coupling described clear glass end cap has carried out the frosted processing.
3. the biography for high power laser transmission according to claim 1 can optical cable, wherein, side in the face of described clear glass end cap of the described sheet metal in described the first energy-transmission optic fibre joint also is provided with glass plate, this glass plate and described sheet metal close contact, and this glass plate carried out the frosted processing with surface described sheet metal close contact, described grass tube is fixed on the described sheet metal by being combined with this glass plate.
4. the biography for high power laser transmission according to claim 1 can optical cable, wherein, described light scattering pipe is made by glass tube, and this light scattering pipe is bonding by the covering of bonding agent and described energy-transmission optic fibre, and the outer wall of this light scattering pipe has carried out the frosted processing.
5. the biography for high power laser transmission according to claim 1 can optical cable, wherein, the one or more walls in the face of in the inwall of the wall of a side of described clear glass end cap and described metal tube at the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described sheet metal are coated be used to the light absorbing material that absorbs the light in one or more wavelength coverages.
6. the biography for high power laser transmission according to claim 3 can optical cable, wherein, the one or more walls in the inwall of the wall that contacts with described sheet metal of the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described glass plate and described metal tube are coated be used to the light absorbing material that absorbs the light in one or more wavelength coverages.
According to claim 5 or 6 described biographies for high power laser transmission can optical cables, wherein, described light absorbing material comprises one or more layers light absorbing material.
8. the described biography for the high power laser transmission of the arbitrary claim in 6 can optical cable according to claim 1, wherein, wrap in optical transmission section part outside the described two ends of described energy-transmission optic fibre around described metallic sheath comprise the first metallic sheath that is enclosed within on the described energy-transmission optic fibre and be enclosed within the second metallic sheath on described the first metallic sheath, and be filled with electrically insulating material between described the first metallic sheath and described the second metallic sheath, described the second metallic sheath is fixedly connected with the described other end of the described metal tube of described the first energy-transmission optic fibre joint.
9. the described biography for the high power laser transmission of the arbitrary claim in 6 can optical cable according to claim 1, wherein, the structure of described the second energy-transmission optic fibre joint is identical with the structure of described the first energy-transmission optic fibre joint, and the combination of the described other end of described the second energy-transmission optic fibre joint and described energy-transmission optic fibre is identical with the combination of a described end of described the first energy-transmission optic fibre joint and described energy-transmission optic fibre.
10. the biography for high power laser transmission according to claim 9 can optical cable, wherein, temperature sensor on described the second energy-transmission optic fibre joint is connected on the described controller, so that the temperature of surveying when this temperature sensor is during greater than the 3rd predetermined threshold, this controller cuts off the output of described laser instrument.
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| CN201110215421.2A CN102902030B (en) | 2011-07-29 | 2011-07-29 | Energy transfer optical cable for high-power laser transmission |
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| CN201110215421.2A CN102902030B (en) | 2011-07-29 | 2011-07-29 | Energy transfer optical cable for high-power laser transmission |
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| CN102902030B CN102902030B (en) | 2013-12-25 |
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| CN105652462A (en) * | 2016-01-22 | 2016-06-08 | 中国人民解放军国防科学技术大学 | Large-power optical fiber collimator system with cladding light filtering-out function |
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| JP2017191194A (en) * | 2016-04-13 | 2017-10-19 | 三菱電線工業株式会社 | Optical fiber/quartz block junction structure and method of manufacturing the same |
| JP2017216395A (en) * | 2016-06-01 | 2017-12-07 | 新日鐵住金株式会社 | Abnormality detector of laser irradiation facility |
| JP2017223780A (en) * | 2016-06-14 | 2017-12-21 | 株式会社フジクラ | Optical device and laser apparatus |
| CN108801600A (en) * | 2017-04-28 | 2018-11-13 | 大族激光科技产业集团股份有限公司 | A kind of fiber leaky detection device |
| CN107332100A (en) * | 2017-08-09 | 2017-11-07 | 光惠（上海）激光科技有限公司 | A kind of easily removable and washable laser export head of water-cooled that function is detected with output light path and light power |
| CN107332100B (en) * | 2017-08-09 | 2023-08-01 | 光惠（上海）激光科技有限公司 | Water-cooled easy-to-disassemble and-wash laser output head with output light path and light output power detection function |
| CN108306171A (en) * | 2018-03-04 | 2018-07-20 | 南京理工大学 | Optical fiber laser monitoring and protecting device and guard method |
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