CN102902030B - 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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- CN102902030B CN102902030B CN201110215421.2A CN201110215421A CN102902030B CN 102902030 B CN102902030 B CN 102902030B CN 201110215421 A CN201110215421 A CN 201110215421A CN 102902030 B CN102902030 B CN 102902030B
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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, relate to a kind of biography energy optical cable for the high power laser transmission.
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 addressed this problem.
At present, existing biography can the optical cable maximum can be transmitted the laser of average power in kilowatt magnitude.Can produce very high heat while transmitting in the fiber cores of powerful like this laser in biography energy optical cable, likely damage biography energy optical cable and also cause security incident.Thereby avoid damaging that pass can optical cable in order to reduce high power laser passing in can optical cable the heat produced, passing and can in optical cable, adopt various measures to be dispelled the heat.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, make during the light that is not coupled in fibre core scatters to air when being transferred to covering-Air Interface, thereby avoided being absorbed by the coat in optical cable and caused that temperature raises so that burns out optical cable.But because the surface area of fibre core covering is less, thereby light scattering insufficient.The optical fiber that also has some energy-transmission optic fibres or be included in fiber laser is dispelled the heat by around fibre core, configuring complicated water cooling plant, 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 for the biography energy optical cable that transmits high power laser, wherein, uses and wraps in the working condition monitoring circuit that the outer metal level of fibre core forms this optical cable.But at present the methods of electroless platings that adopt form metal level more outside fibre core, this class methods complex manufacturing technology and have chemical contamination, be unfavorable for reducing costs and protection of the environment.
Summary of the invention
In order to obtain biography energy optical cable with abundant heat-sinking capability with the transmission high power laser, simultaneously for the cost of manufacture that reduces biography energy optical cable and improve pass can optical cable safety in utilization, need a kind of simple in structure, by safety and there is the biography energy optical cable of very strong heat-sinking capability to transmit high power laser.The object of the present invention is to provide a kind of biography energy optical cable for the high power laser transmission, this passes the energy optical cable, and not only cost is low, use safety, and can fully dispel the heat to guarantee that this biography 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 be 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, around the optical transmission section part outside the described two ends of this section energy-transmission optic fibre, is surrounded by metallic sheath.Described the first energy-transmission optic fibre joint comprises: metal tube; Be fixed on hermetically the clear glass end cap in an 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 a side of described clear glass end cap and be parallel to the grass tube of described metal tube Axis Extension; Near the surface in the face of a side of described clear glass end cap of described sheet metal and through the water inlet pipe of described metal tube tube wall and described grass tube tube wall; Near the surface in the face of a side of described clear glass end cap of described sheet metal and through the rising pipe of described metal tube tube wall; And be arranged on the temperature sensor in described metal tube outer wall.Simultaneously, a described end of described energy-transmission optic fibre extends through described sheet metal and in described grass tube inside 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 controller, make the value of the temperature of surveying when described temperature sensor be greater than the first predetermined threshold or, when the resistance of described metallic sheath is 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 the frosted processing.
Preferably, a 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 with surface described sheet metal close contact, can carry out the frosted processing, described grass tube can be by being combined and being fixed on described sheet metal 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, on the one or more walls in the inwall of the wall in the face of a side of described clear glass end cap of the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described sheet metal and described metal tube, can be coated with for absorbing the light absorbing material of the light in one or more wavelength coverages.Perhaps, preferably, on the one or more walls in the inwall of the wall contacted 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, can be coated with for absorbing the light absorbing material of the light in one or more wavelength coverages.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 be enclosed within on 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 described controller, and while making the temperature of surveying when this temperature sensor be 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 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 carried out to frosted and process the scattering that increases the laser that is not coupled into fibre core, thereby these light can be gathered in, a bit produce high temperature; Adopt glass plate/sheet metal that coupled end and the optical transmission section of this biography energy optical cable are separated, make the laser that is not coupled into fibre core in described coupled end can not be radiated on the optical cable of optical transmission section; On one or more walls in the inwall of the inwall by the outer wall at the light scattering pipe, grass tube and/or the wall of outer wall, described sheet metal or glass plate and described metal tube, cover for absorbing the light absorbing material of the light in one or more wavelength coverages, disperse throughout the scattered light of absorbing laser, thereby reduce hot gathering; Utilize metal tube, clear glass end cap, glass plate/sheet metal to form cavity and utilize the guiding of grass tube do that current are taken away fully and be gathered in the heat in the 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 form the temperature monitoring unit, cut off the output of laser instrument when the temperature with assurance in passing the energy optical cable is too high, thereby guaranteed the safe handling of this biography energy optical cable.
The accompanying drawing explanation
Fig. 1 is the cut-open view of the structure of the optically-coupled end of the described biography energy optical cable for high power laser transmission of one embodiment of the present of invention and optical transmission section;
Fig. 2 is the structure enlarged drawing of the optically-coupled end of the biography energy optical cable for the high power laser transmission in Fig. 1; And
Fig. 3 is the energy-transmission optic fibre of the described biography energy optical cable for the high power laser transmission of one embodiment of the present of invention and the structural representation of light scattering pipe.
Embodiment
The embodiment of the biography energy optical cable for the high power laser transmission of the present invention 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 to described embodiment, be revised with various mode or its combination.Therefore, accompanying drawing is illustrative with being described in essence, rather than for limiting the protection domain of claim.In addition, in this manual, accompanying drawing draws not in scale, and identical Reference numeral means identical part.
Biography energy optical cable for the high power laser transmission of the present invention comprises one section energy-transmission optic fibre, one end of this section energy-transmission optic fibre embeds in the first energy-transmission optic fibre joint be coupled with the laser emitting end, thereby form 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 part outside the described two ends of this section energy-transmission optic fibre, formed the optical transmission section part of this biography energy optical cable.Fig. 1 is cut-open view, show the optically-coupled end of the described biography energy optical cable for the high power laser transmission of one embodiment of the present of invention 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 forms biography energy optical cable 100.Part outside the optically-coupled end of the biography energy optical cable 100 in Fig. 1 is the optical transmission section part, this optical transmission section part consists of energy-transmission optic fibre 10 and one or more layers metallic sheath spaced by insulating medium 30 wrapped on energy-transmission optic fibre 10, and the light output end of the biography energy optical cable 100 that the other end of energy-transmission optic fibre 10 and described the second energy-transmission optic fibre junction form altogether 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 in Fig. 1, wherein for simplicity, temperature sensor in Fig. 2 in 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 in Fig. 2 has been exaggerated.Fig. 3 is energy-transmission optic fibre 10 in the biography energy optical cable 100 in Fig. 1 and the structural representation of light scattering pipe.
As shown in Figure 1, the described biography energy optical cable 100 for high power laser transmission of one embodiment of the present of invention comprise energy-transmission optic fibre 10, the first energy-transmission optic fibre joint 20, spaced metallic sheath 30 and the second energy-transmission optic fibre joint (not shown) by insulating medium.
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 (, the clear glass end cap that will describe in back and the fiber section between sheet metal) the outside surface of covering 12 light scattering pipe 13 is set, light scattering pipe 13 can for example, be made by glass tube (quartz ampoule), its refractive index is greater than or is approximately equal to the refractive index of the covering 12 of optical fiber 10, and 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 with the light absorbing material 15 for absorbing 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 one end of energy-transmission optic fibre 10 comprises metal tube 21, be fixed on hermetically the clear glass end cap 22 in an 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 the surface in the face of a side of clear glass end cap 22 of sheet metal 23 and through the water inlet pipe 25 of metal tube 21 tube walls and grass tube 24 tube walls, near the surface in the face of a side of clear glass end cap 22 of sheet metal 23 and through the rising pipe 26 of metal tube 21 tube walls, and be arranged on the temperature sensor 28 in metal tube 21 outer walls.
A described end of energy-transmission optic fibre 10 extends through sheet metal 23 and in grass tube 24 inside along the axis of metal tube 21, the end face of this end and 22 couplings of clear glass end cap.In addition, as mentioned above, in the part between clear glass end cap 22 and sheet metal 23 of this end of energy-transmission optic fibre 10, closely overlap light scattering pipe 13 is arranged.
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 the frosted processing.
In the time of on the end face 22b of laser beam irradiation at clear glass end cap 22 that laser instrument penetrates, owing on this end face 22b, being coated with antireflection film, so this laser beam enters in clear glass end cap 22 in 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 energy-transmission optic fibre 10, total reflection occurs in the interface at fibre core 11 and covering 12, thus transmission forward.Therefore 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, in entering laser beam B in optical fiber 10 some reflecting and enter covering 12 on the interface of fibre core 11 and covering 12.Some laser beam C shines directly on covering 12, enters into covering 12 transmission.Because the refractive index of the light scattering pipe 13 of covering 12 outsides is greater than or is 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 in outside surface 13a place's scattering of processing through frosted of light scattering pipe 13 enters grass tube 24.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 greatly increased the scattering of the laser that is not coupled into fibre core, made this part light can not be gathered in a bit and produce high temperature.In addition, the light path disalignment of some laser beam D, the conical lateral surface 22d that shines clear glass end cap 22 is upper, because side surface 22d has passed through the frosted processing, therefore laser beam D can be scattered out.
No matter be the light scattered out from energy-transmission optic fibre 10, or the light scattered out from the side surface 22d of clear glass end cap 22 finally all will directly or pass grass tube 24 and be absorbed by metal tube 21 and sheet metal 23 and be converted into heat.According to some embodiments of the present invention, a 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.Can carry out scattering to the light beam likely directly be mapped to sheet metal 23 from laser instrument like this, 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 wall of the side in the face of clear glass end cap 22 of the inner and outer wall of the outer wall of light scattering pipe 13, grass tube 24, sheet metal 23 (or, the wall contacted with sheet metal 23 of glass plate 23a) cover and on the one or more walls in the inwall of metal tube 21 for absorbing the light absorbing material of the light in one or more wavelength coverages, wherein, this light absorbing material can comprise one or more layers light absorbing material.
Higher or working time energy-transmission optic fibre 10 of the power of the laser beam of transmitting when energy-transmission optic fibre 10, when longer, needs very strong cooling measure that the heat of assembling in the first energy-transmission optic fibre joint 20 is distributed.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 formed a cavity, at the near surface in the face of a side of clear glass end cap 22 of sheet metal 23, are provided with water inlet pipe 25 and rising pipe 26.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 produced in the light absorbing material on sheet metal 23 and 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 through metal tube 21 tube walls and grass tube 24 tube walls, make 26 of rising pipes pass metal tube 21 tube walls.Like this, flowing into chilled water described cavity from water inlet pipe 25 will flow out from rising pipe 26 after the direction shown in the hollow arrow in Fig. 2 flows fully in described cavity.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, thereby be conducive to chilled water, flow away in time.In addition, also can design the shape of grass tube 24, make the water flow field in described cavity have velocity distribution, thereby can further improve, in described cavity, some determines the heat-sinking capability of position.
Referring again to Fig. 1, for biography energy optical cable of the present invention can be used safely, in one aspect, pass at first of the described biography energy optical cable 100 for high power laser transmission of one embodiment of the present of invention 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, for monitoring the temperature of metal tube 21.Temperature sensor 28 is connected with controller, make due to laser power is too large or the working time is oversize or due to laser instrument with pass can the optical cable coupling not goodly while causing value that laser leaks the temperature detected that makes temperature sensor 28 to be 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 consists of energy-transmission optic fibre 10 and the metallic sheath 30 wrapped on energy-transmission optic fibre 10.This metallic sheath 30 can only comprise the first metallic sheath 31 be enclosed within on 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.
For biography energy optical cable of the present invention can be used safely, in yet another aspect, the two ends that are enclosed within the first metallic sheath 31 on the energy-transmission optic fibre 10 of optical transmission section of the described biography energy optical cable 100 for high power laser transmission of one embodiment of the present of invention are connected to described controller.If the power of the laser transmitted at this optical transmission section is too large, to such an extent as to burn out the first metallic sheath 31, between the described two ends of this first metallic sheath 31, resistance will become large so.When the resistance between the described two ends of the first metallic sheath 31 is greater than the second predetermined threshold, described controller will cut off the output of laser instrument.
Although do not illustrate in Fig. 1-Fig. 3, 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 it other end that end of clear glass end cap 22 is relative 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 energy optical cable 100 transmitted for high power laser can have the head and the tail symmetrical structure.Temperature sensor on described the second energy-transmission optic fibre joint is connected on described controller, and while making the value of the temperature detected when this temperature sensor be greater than the 3rd predetermined threshold, this controller cuts off the output of described laser instrument.In use, the high power laser illumination of exporting from biography energy optical cable 100 is on object, and now, the reflected light that has some returns to biography energy optical cable 100, thereby makes the temperature rising of the light output end of biography energy optical cable 100.Therefore, pass light output end that can optical cable 100 the clear glass end cap do not need to plate antireflection film.In addition, also can according to circumstances design the light-emitting face shape of this clear glass end cap, make the light reflected from object be 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 to the second energy-transmission optic fibre joint with dust around reducing, fiber end face polluted in glass cap.
Should note, functional circuit can directly or (for example be passed through in the two ends of the metallic sheath (or first metallic sheath) of the optical transmission section of the temperature sensor on the first energy-transmission optic fibre joint in 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 described controller, thus realize monitoring and the control of 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 design with the structure of the circuit of realizing temp monitoring function of the present invention, and can there is multiple modification, just it has not been described in detail here.It should be noted that, as shown in Figure 1, the wire 28a be connected with described temperature sensor 28 and the wire 31a that is connected with described optical transmission section metallic sheath 31 can be by 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 carry out cabling.Obviously, other cabling mode is also possible.
As mentioned above, the described structure adopted 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, make the place that produces heat disperse as much as possible simultaneously, even laser is passing and can in optical cable, produce heat, also can make heat be pulled away as early as possible, in addition, the heat produced once laser maybe will damage optical cable and just make to pass and can 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.
Accompanying drawing has been described the biography energy optical cable for the high power laser transmission of the present invention in the mode of example above with reference to.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 on the basis that does not break away from content of the present invention, make various improvement.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. the biography energy optical cable for high power laser transmission, 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 be 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 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 an 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 a side of described clear glass end cap and be parallel to the grass tube of described metal tube Axis Extension;
Near the surface in the face of a side of described clear glass end cap of described sheet metal and through the water inlet pipe of described metal tube tube wall and described grass tube tube wall;
Near the surface in the face of a side of described clear glass end cap of described sheet metal and through the rising pipe of described metal tube tube wall; And
Be arranged on the temperature sensor in described metal tube outer wall,
Wherein, a described end of described energy-transmission optic fibre extends through described sheet metal and in described grass tube inside 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 controller, make the value of the temperature of surveying when described temperature sensor be greater than the first predetermined threshold or, when the value of the resistance of described metallic sheath is greater than the second predetermined threshold, described controller cuts off the output of described laser instrument.
2. the biography energy optical cable for high power laser transmission according to claim 1, 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 energy optical cable for high power laser transmission according to claim 1, wherein, a 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 with surface described sheet metal close contact, carried out the frosted processing, described grass tube is by being combined and being fixed on described sheet metal with this glass plate.
4. the biography energy optical cable for high power laser transmission according to claim 1, 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 energy optical cable for high power laser transmission according to claim 1, wherein, on the one or more walls in the inwall of the wall in the face of a side of described clear glass end cap of the inner and outer wall of the outer wall of described light scattering pipe, described grass tube, described sheet metal and described metal tube, be coated with for absorbing the light absorbing material of the light in one or more wavelength coverages.
6. the biography energy optical cable for high power laser transmission according to claim 3, wherein, on the one or more walls in the inwall of the wall contacted 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, be coated with for absorbing the light absorbing material of the light in one or more wavelength coverages.
7. according to the described biography energy optical cable for the high power laser transmission of claim 5 or 6, wherein, described light absorbing material comprises one or more layers light absorbing material.
8. according to the described biography energy optical cable for the high power laser transmission of the arbitrary claim in claim 1 to 6, 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 be enclosed within on 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. according to the described biography energy optical cable for the high power laser transmission of the arbitrary claim in claim 1 to 6, 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 energy optical cable for high power laser transmission according to claim 9, wherein, temperature sensor on described the second energy-transmission optic fibre joint is connected on described controller, while making the value of the temperature of surveying when this temperature sensor be greater than the 3rd predetermined threshold, this controller cuts off the output of described laser instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110215421.2A CN102902030B (en) | 2011-07-29 | 2011-07-29 | Energy transfer optical cable for high-power laser transmission |
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| CN102902030B true CN102902030B (en) | 2013-12-25 |
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| CN103399381B (en) * | 2013-07-30 | 2016-08-10 | 大族激光科技产业集团股份有限公司 | Optical-fiber laser delivery |
| SE538234C2 (en) | 2013-10-18 | 2016-04-12 | Optoskand Ab | Optoelectronic connector |
| CN105527679B (en) * | 2015-12-29 | 2017-11-28 | 孟祥宇 | A kind of optical-fiber laser export head and its manufacture method |
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| JP6765210B2 (en) * | 2016-04-13 | 2020-10-07 | 三菱電線工業株式会社 | Optical fiber / quartz block bonding structure and its manufacturing method |
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| 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 |
| 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 |
| CN108761646A (en) * | 2018-07-16 | 2018-11-06 | 深圳市星汉激光科技有限公司 | A kind of optical fiber pigtail |
| JP2023053684A (en) * | 2021-10-01 | 2023-04-13 | 三菱重工業株式会社 | optical connector |
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