CN104426051A - Optical fiber coupling fixing method of butterfly laser device assembly - Google Patents
Optical fiber coupling fixing method of butterfly laser device assembly Download PDFInfo
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- CN104426051A CN104426051A CN201310392723.6A CN201310392723A CN104426051A CN 104426051 A CN104426051 A CN 104426051A CN 201310392723 A CN201310392723 A CN 201310392723A CN 104426051 A CN104426051 A CN 104426051A
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Abstract
The invention provides an optical fiber coupling fixing method of a butterfly laser device assembly. The optical fiber coupling fixing method comprises the following steps of A, preassembling, wherein the butterfly laser device assembly comprises a pipe casing, a heat sink is arranged in the pipe casing, and a laser device chip is fixedly arranged at the surface of the heat sink; B, applying a clamp, wherein the preassembled laser device assembly is arranged and fixedly arranged in the coupling clamp, a bare optical fiber penetrates into the casing through a tail pipe, and the front end of the optical fiber is arranged at the surface of the heat sink; C, adjusting the optical fiber, wherein the corresponding positions of the end surface of the bare optical fiber and the output light end surface of the laser device chip are adjusted, and the output light power of the optical fiber reaches the ideal value; D, fixing the bare optical fiber, wherein low-temperature glass welding material is arranged between the contact surfaces of the bare optical fiber and the heat sink, a laser melting welding machine is started, the low-temperature glass welding material is heated and melted by laser under the nitrogen protection condition, the bare optical fiber and the surface of the heat sink are fully melted with the low-temperature glass welding material, and the optical fiber is lifted by certain compensation amount through a clip of the coupling clamp. The optical fiber coupling fixing method has the advantages that the influence on the downward pulling displacement caused by the condensing of the low-temperature glass welding material is avoided, and the low-temperature glass welding material is slowly cooled, so as to fix the optical fiber.
Description
Technical field
The present invention relates to a kind of butterfly-type laser assembly, particularly relate to a kind of coupling fiber fixing means of butterfly-type laser assembly.
Background technology
Existing butterfly-type packaged laser component, being coupled of its structure and optical fiber and chip of laser fixingly has following two kinds usually: a kind of butterfly-type packaged laser component 100 adopted as shown in Figure 1, comprise: a laser assembly shell 110, one heat sink 111 is provided with in shell, one chip of laser 112 and a lens devices 113 are individually fixed in this heat sink 111 surfaces, optical fiber 116 is preset in ceramic insertion core 114, then enter in shell 110 through tail pipe 117, first lens devices 113 is positioned on heat sink 111 before coupling, the emergent light of chip of laser 112 converges to optical fiber 116 end coupling through lens devices 113 and exports, when laser coupling output luminous power reaches ideal value, utilizing double light beam laser to weld is fixed on heat sink 111 by lens devices 113, re-use three beam laser welderings the becket 115 of band ceramic insertion core 114 is fixed with heat sink 111, thus make the Coupling power output that optical fiber 116 reaches desirable.When adopting laser welding techniques to be fixed on heat sink 111 by the becket 115 of ceramic insertion core 114, be connected and fixed owing to relating between multiple different materials, therefore there is larger stress in contact-making surface, in use procedure, due to Stress Release, the coupling of optical fiber can be caused to misplace, laser assembly unstable properties, luminous power exports and reduces.The second adopts butterfly-type packaged laser component 200 as shown in Figure 2, comprise: a laser assembly shell 210, one heat sink 211 is provided with in this shell, one chip of laser 212 and an aluminium oxide ceramics cushion block 217 are individually fixed in this heat sink 211 surfaces, one through the gold-plated lens-type bare fiber 214 of surface metalation, its lens end is placed in aluminium oxide ceramics cushion block 217 surface through tail pipe 215, when being coupled and aligned, adopt a coupling cramp clip 216 retain lenses type bare fiber 214, when the lensed endface of chip of laser 212 emergent light and lens-type bare fiber 214 is coupled and aligned optimum value, lens-type bare fiber 214 utilizes low temperature glass solder 213 directly to fix with aluminium oxide ceramics cushion block 217 surface, but, low temperature glass solder 213 adopts LASER HEATING welding, low temperature glass solder 213, solder joint between aluminium oxide ceramics cushion block 217 and heat sink 211 threes is many, and the thermal coefficient of expansion of each material is different, laser assembly in use, will not mate because producing stress, the lensed endface relative laser device chip 212 of lens-type bare fiber 214 is easily caused to produce displacement, thus cause coupled optical power to reduce, laser assembly performance degradation, Output optical power is unstable, time on the other hand due to LASER HEATING low temperature glass solder, Micro trauma may be caused to optical fiber solder joint place, form device reliability hidden danger.
Summary of the invention
For overcoming above shortcoming, the invention provides a kind of coupling fiber fixing means of a kind of butterfly-type laser assembly of stable performance.
For reaching above goal of the invention, the invention provides a kind of coupling fiber fixing means of butterfly-type laser assembly, comprise following: A, prepackage laser assembly, comprise a laser assembly shell, be provided with one heat sink in shell, a chip of laser is fixed on described heat sink surface; B, upper fixture: prepackage laser assembly is put into coupling cramp and fix, bare fiber is penetrated housing by tail pipe, and optical fiber front end is placed in described heat sink surface; C, adjustment optical fiber: with coupling cramp clip clamping bare fiber, the relative position of adjustment bare fiber end face and the defeated light output end of chip of laser, makes optical fiber Output optical power reach ideal value; D, fixing bare fiber: between bare fiber and heat sink contact-making surface, place low temperature glass solder; open laser welding welding machine; under nitrogen protection; LASER HEATING fusing low temperature glass solder; make bare fiber, heat sink surface fully and low temperature glass solder welding, and with coupling cramp clip, bare fiber is promoted certain compensation rate, overcome because low temperature glass solder solidifies impact on the drop-down displacement of optical fiber; then make low temperature glass solder Slow cooling, complete optical fiber and fix.
During for avoiding LASER HEATING low temperature glass solder; the Micro trauma that may cause bare fiber solder joint place; affect the reliability of device; a small amount of low temperature glass solder is added again at bare fiber and heat sink solder joint place; LASER HEATING makes low temperature glass solder melting and encases solder joint, and particularly bare fiber is key protection point at bare fiber and heat sink exposed portion, solder joint place.
Fix for eliminating optical fiber the stress that processing produces, bare fiber solder joint place LASER HEATING to 100 DEG C ~ 150 DEG C, then Slow cooling annealing, eliminates stress.
The coupling fiber fixing means of above-mentioned butterfly-type laser assembly, no matter be common bare fiber, or lens-type bare fiber, optical fiber surface does not all need metallization gold-plated, can reduce costs, and adopt low temperature glass solder welding, by bare fiber directly with heat sink fixing, because the material thermal expansion coefficient adopted is close, and low temperature glass solder joint is annealed through in-situ low-temperature, release major part stress, because of residual stress release optical fiber is offset possible minimum, therefore optical power change be can not cause, thus stability and the reliability of whole laser assembly improved.
Accompanying drawing explanation
Fig. 1 represents the butterfly-type packaged laser component structural representation of the first prior art;
Fig. 2 represents the butterfly-type packaged laser component structural representation of the second prior art;
Fig. 3 represents butterfly-type packaged laser component first example structure schematic diagram of the present invention;
Fig. 4 represents butterfly-type packaged laser component second example structure schematic diagram of the present invention.
Embodiment
Preferred embodiment is described in detail below in conjunction with accompanying drawing.
The butterfly-type packaged laser component 300 of the first embodiment as shown in Figure 3, comprise: a laser assembly shell 310, one heat sink 311 is provided with in shell, one chip of laser 312 and a lens devices 313 are surperficial due to heat sink 311 with double light beam laser solid welding respectively, the smooth end face of one bare fiber 315 enters shell 310 through tail pipe 316 and is clamped by coupling cramp clip 317 and is placed in heat sink 311 surfaces, chip of laser 312 emergent light is converged to the smooth end face of bare fiber 315 by lens devices 313, and bare fiber 315 is directly fixed with heat sink 311 by low temperature glass solder 314 lf.In order to make assembly isolate backlight better, can also device one optical isolator between lens devices 313 and the smooth end face of bare fiber 315.
The butterfly-type packaged laser component 400 of the second embodiment as shown in Figure 4, comprise: a laser assembly shell 410, one heat sink 411 is provided with in shell, one chip of laser 412 is fixed on heat sink 411 surfaces, one lens-type bare fiber 414 lensed endface enters shell 410 through tail pipe 415 and is clamped by coupling cramp clip 416, be placed in heat sink 411 surfaces, chip of laser 412 emergent light is coupled to lens-type bare fiber 414 lensed endface, and lens-type bare fiber 414 is fixed by low temperature glass solder 413 lf and heat sink 412.In this structure, owing to have employed lens-type bare fiber 414, namely fiber end face is lenticular, by chip of laser 412 emergent light coupling output effectively, can not need the lens devices 313 in the first embodiment, make whole modular construction compacter, cost is lower, and stability is better.
The butterfly-type packaged laser component of above-mentioned two kinds of structures, its coupling fiber fixing means, comprises the following steps:
A, prepackage laser assembly, comprise a laser assembly shell, be provided with one heat sink in shell, one chip of laser is individually fixed in heat sink surface, if common bare fiber, also needs increase by lens devices, if lens-type bare fiber, then do not need lens devices;
B, upper fixture: prepackage laser assembly is put into coupling cramp and fix, bare fiber is penetrated housing by tail pipe;
C, adjustment optical fiber: with coupling cramp clip clamping bare fiber, the relative position of adjustment bare fiber end face and the defeated light output end of chip of laser or lens devices, makes optical fiber Output optical power reach ideal value;
D, fixing bare fiber: between bare fiber and heat sink contact-making surface, place low temperature glass solder; open laser welding welding machine; under nitrogen protection; LASER HEATING fusing low temperature glass solder; make bare fiber, heat sink surface fully and low temperature glass solder welding fix, due to when low temperature glass solder solidifies to the oriented lower pulling force of bare fiber, with coupling cramp clip, bare fiber is promoted certain compensation rate; make low temperature glass solder Slow cooling, complete optical fiber and fix.
The protection of E, optical fiber fixing point: after completing optical fiber fixing step, during for avoiding LASER HEATING low temperature glass solder, the Micro trauma that may cause bare fiber solder joint place, affect the reliability of device, a small amount of low temperature glass solder is added again at bare fiber and heat sink solder joint place, LASER HEATING makes low temperature glass solder melting and encases former solder joint, particularly bare fiber at bare fiber and heat sink exposed portion, solder joint place is key protection point;
The annealing that F, optical fiber are fixing: fix the stress that processing produces for eliminating optical fiber, bare fiber solder joint place LASER HEATING to 100 DEG C ~ 150 DEG C, then Slow cooling annealing, eliminates stress.The butterfly-type packaged laser component of above-mentioned two kinds of structures, no matter be common bare fiber, or lens-type bare fiber, optical fiber surface does not all need metallization gold-plated, can reduce costs, and adopt low temperature glass solder welding, by bare fiber directly with heat sink fixing, because the material thermal expansion coefficient adopted is close, and low temperature glass solder joint is annealed through in-situ low-temperature, release major part stress, because of residual stress release optical fiber is offset possible minimum, therefore optical power change be can not cause, thus stability and the reliability of whole laser assembly improved.
Claims (3)
1. a coupling fiber fixing means for butterfly-type laser assembly, is characterized in that, comprises following: A, prepackage laser assembly, and comprise a laser assembly shell, be provided with one heat sink in shell, a chip of laser is fixed on described heat sink surface; B, upper fixture: prepackage laser assembly is put into coupling cramp and fix, bare fiber is penetrated housing by tail pipe, and optical fiber front end is placed in described heat sink surface; C, adjustment optical fiber: with coupling cramp clip clamping bare fiber, the relative position of adjustment bare fiber end face and the defeated light output end of chip of laser, makes optical fiber Output optical power reach ideal value; D, fixing bare fiber: between bare fiber and heat sink contact-making surface, place low temperature glass solder; open laser welding welding machine; under nitrogen protection; LASER HEATING fusing low temperature glass solder; make bare fiber, heat sink surface fully and low temperature glass solder welding, and with coupling cramp clip, bare fiber is promoted certain compensation rate, overcome because low temperature glass solder solidifies impact on the drop-down displacement of optical fiber; then make low temperature glass solder Slow cooling, complete optical fiber and fix.
2. coupling fiber fixing means according to claim 1, is characterized in that, after completing described fixing bare fiber step, add a small amount of low temperature glass solder again at bare fiber and heat sink solder joint place, LASER HEATING makes low temperature glass solder melting and encases solder joint.
3. coupling fiber fixing means according to claim 2, is characterized in that, be also included in bare fiber solder joint place LASER HEATING to 100 DEG C ~ 150 DEG C, then Slow cooling annealing, eliminates stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310392723.6A CN104426051A (en) | 2013-08-26 | 2013-08-26 | Optical fiber coupling fixing method of butterfly laser device assembly |
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| CN201310392723.6A CN104426051A (en) | 2013-08-26 | 2013-08-26 | Optical fiber coupling fixing method of butterfly laser device assembly |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161972A (en) * | 2015-10-12 | 2015-12-16 | 中国电子科技集团公司第四十四研究所 | Optical fiber output large-power semiconductor laser module |
| CN106483612A (en) * | 2016-12-14 | 2017-03-08 | 江苏奥雷光电有限公司 | A kind of optical fiber and laser instrument fixing means |
| CN109358400A (en) * | 2018-12-11 | 2019-02-19 | 昂纳信息技术（深圳）有限公司 | A kind of optical fiber fixing method and a kind of optical device |
| CN109581395A (en) * | 2018-11-29 | 2019-04-05 | 中国船舶工业系统工程研究院 | Machine positioning device and method are gone straight up in a kind of operation on the sea based on reflecting piece |
| CN115308841A (en) * | 2022-08-26 | 2022-11-08 | 上海润京能源科技有限公司 | Cutting method of rotating optical fiber and optical fiber reflector |
| CN115356816A (en) * | 2022-10-19 | 2022-11-18 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber fixing assembly and optical device |
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| CN202384374U (en) * | 2012-01-12 | 2012-08-15 | 深圳市飞康技术有限公司 | PIN-FET optical receiving module |
| CN103018854A (en) * | 2012-12-19 | 2013-04-03 | 武汉电信器件有限公司 | Accurate alignment fixing structure and alignment fixing method of optic fiber of photoelectron device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2363475B (en) * | 2000-06-15 | 2003-08-27 | Seos Displays Ltd | Collimated visual display apparatus |
| JP2008117980A (en) * | 2006-11-06 | 2008-05-22 | Sumitomo Osaka Cement Co Ltd | Optical module |
| CN202260118U (en) * | 2011-09-20 | 2012-05-30 | 深圳市飞康技术有限公司 | Butterfly type laser encapsulation component |
| CN202384374U (en) * | 2012-01-12 | 2012-08-15 | 深圳市飞康技术有限公司 | PIN-FET optical receiving module |
| CN103018854A (en) * | 2012-12-19 | 2013-04-03 | 武汉电信器件有限公司 | Accurate alignment fixing structure and alignment fixing method of optic fiber of photoelectron device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161972A (en) * | 2015-10-12 | 2015-12-16 | 中国电子科技集团公司第四十四研究所 | Optical fiber output large-power semiconductor laser module |
| CN106483612A (en) * | 2016-12-14 | 2017-03-08 | 江苏奥雷光电有限公司 | A kind of optical fiber and laser instrument fixing means |
| CN106483612B (en) * | 2016-12-14 | 2018-05-25 | 江苏奥雷光电有限公司 | A kind of optical fiber and laser fixing means |
| CN109581395A (en) * | 2018-11-29 | 2019-04-05 | 中国船舶工业系统工程研究院 | Machine positioning device and method are gone straight up in a kind of operation on the sea based on reflecting piece |
| CN109358400A (en) * | 2018-12-11 | 2019-02-19 | 昂纳信息技术（深圳）有限公司 | A kind of optical fiber fixing method and a kind of optical device |
| CN115308841A (en) * | 2022-08-26 | 2022-11-08 | 上海润京能源科技有限公司 | Cutting method of rotating optical fiber and optical fiber reflector |
| CN115308841B (en) * | 2022-08-26 | 2024-06-04 | 上海润京能源科技有限公司 | Cutting method of rotating optical fiber and optical fiber reflector |
| CN115356816A (en) * | 2022-10-19 | 2022-11-18 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber fixing assembly and optical device |
| CN115356816B (en) * | 2022-10-19 | 2023-03-10 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber fixing assembly and optical device |
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