CN103901546A - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
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- CN103901546A CN103901546A CN201410126664.2A CN201410126664A CN103901546A CN 103901546 A CN103901546 A CN 103901546A CN 201410126664 A CN201410126664 A CN 201410126664A CN 103901546 A CN103901546 A CN 103901546A
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- optical fiber
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- collimator
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Abstract
The invention relates to an optical fiber collimator which comprises optical fibers, an optical fiber inserting core, an optical fiber inserting core fixing piece, an optical fiber inserting core fastener, a collimating lens, a collimator structure piece and a tail protection sleeve. The optical fiber collimator has the advantages that the optical fiber inserting core is fixed through machines in a welding reinforcing mode; meanwhile, the optical fiber inserting core fixing piece is fixed with the laser welding technology, the reliability of the optical fiber collimator is improved, the end faces of the optical fibers are slope end faces, feedback of high-power lasers can be avoided, and when polarization maintaining optical fibers are used, the polarization direction of the optical fiber collimator has the good coincidence. The optical fiber collimator has the advantages of being convenient to install and debug, high in temperature stability, high in mechanical stability and the like.
Description
Technical field
The present invention relates to optical fiber, particularly a kind of optical fiber collimator.
Background technology
Optical fiber collimator is in sensing, laser bonding, laser melting coating, the fields such as laser space communication are widely used, current most optical fiber collimator is by optical fiber, contact pin, collimation lens and mechanical outer tube form, optical fiber is fixed on contact pin, and optical fiber contact pins and collimation lens generally adopt glue to be fixed in mechanical overcoat, exist the angle of divergence to change when temperature variation or under mechanical environment, the shortcomings such as beam-pointing variation, thereby directly affect its usability, in the time that optical fiber collimator uses at space environment vacuum state, too much glue can volatilize, directly affect the end face of optical fiber collimator, increase loss, in the time of high power, also can directly collimating apparatus be burnt.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned existing fiber collimator structure aspect temperature stability, mechanical stability, long-term reliability, a kind of optical fiber collimator is provided, this optical fiber collimator had both been applicable to high-power optical fiber collimator, be applicable to again the polarization maintaining optical fiber collimator of small divergence angle, and have simple in structurely, debug easy to operate, the advantage such as reliably and with long-term.
Technical solution of the present invention is as follows:
A kind of optical fiber collimator, be characterised in that its formation comprises collimation lens, collimator structure part, fiber stub fixture, fiber stub, fiber stub securing member, optical fiber and the tail part protection cover of same optical axis, described collimator structure part inside is communicate cylindrical, and described collimation lens is fixed in the through hole of described collimator structure part one end; Described fiber stub inserts in the through hole of described fiber stub fixture, and optical fiber one end of fiber stub is inserted in the through hole of described fiber stub securing member, with described fiber stub securing member pressed fiber lock pin, described fiber stub fixture end face and described fiber stub securing member outside surface are reinforced fixing by laser bonding simultaneously; Again described fiber stub fixture is inserted in the through hole of the described collimator structure part other end, by laser bonding, described collimator structure part end face and described fiber stub fixture are welded and fixed; Finally tail part protection cover is fixed on described fiber stub securing member.
Described collimation lens is non-spherical lens or condenser lens.
Described optical fiber light output end is plane or inclined-plane.
The periphery of described collimator structure part can be provided with the mounting flange of one.
Described fiber stub securing member and the appearance junction of fiber stub fixture are fixed by laser bonding.
The Method of Adjustment of described optical fiber collimator, is characterized in that the method comprises the following steps:
1. described collimation lens is welded in the through hole of outside collimator structure part;
2. optical fiber is weldingly fixed in fiber stub;
3. described fiber stub inserts in described fiber stub fixture, and be inserted in the through hole of described fiber stub securing member optical fiber one end;
4. described fiber stub securing member passes through screw thread pressed fiber lock pin one end, and is fixed by laser bonding with the outside surface of fiber stub fixture;
5. described fiber stub fixture is inserted in the through hole of described optical fiber collimator;
6. by described fiber stub fixture, regulate fiber end face to the distance between collimation lens, and by the angle of divergence of long-focus lens and laser beam analyzer observation output facula, in the time that the angle of divergence reaches requirement, the junction of fiber stub fixture and collimator structure part outside surface is fixed with laser spot welding;
7. finally with the forthright and sincere hungry area of low venting, tail optical fiber protective sleeve and described fiber stub securing member are fixed, to protect collimating apparatus afterbody optical fiber.
The fixing employing laser bonding mode of critical component, fiber stub, fiber stub fixture carries out focus adjustment as one, fixing employing metallized optical fibre between optical fiber and fiber stub is welded and fixed, collimation lens adopts metallization around, and the metal material approaching with thermal expansivity is fixed (optical fiber is fixed and lens are fixing can adopt metal solder to be welded and fixed) together with being welded to, fiber optic protection flexible pipe is fixed by the forthright and sincere hungry area of low venting and optical fiber securing member, this optical fiber collimator is applicable to working under high vacuum, critical component adopts metal solder mode, improve the temperature stability of optical fiber collimator, mechanical stability and the stability under thermovacuum.
The present invention compared with prior art has the following advantages:
1. when collimation lens carries out metal solder by metallization or do not adopt metallization, adopt low temperature glass to be welded and fixed on collimator structure part, the pollution of having avoided common employing ultraviolet glue or other glue fixedly to bring, improve the operating temperature range of optical fiber collimator, increased temperature stability and structural stability;
2. optical fiber and fiber stub is fixing, when adopting metallization to carry out that metal solder is fixed or not adopting metallization, adopt low temperature glass to be welded and fixed, fiber stub afterbody carries out mechanical compaction by fiber stub securing member, be fixed on fiber stub securing member, and adopt laser bonding that fiber stub securing member is strengthened being fixed on optical fiber fixture, greatly improve temperature and the structural stability of optical fiber collimator;
3. become the directional light compared with small divergence angle by regulating fiber end face (or lens) to make to export light with the distance of lens (or fiber end face), and through laser bonding, fiber stub fixture is fixed on collimator structure part, adopt laser bonding at key position, also improve fiber optic collimator actuator temperature and structural stability, reduced the pollution of glue to optics and fiber end face;
4. between fiber stub and fiber stub fixture, adopt solder technology to be fixed by fiber stub securing member, can increase the heat-sinking capability of fiber-optic output, be applicable to more high-power optical fiber collimator.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but should not limit the scope of the invention with this.
First refer to Fig. 1, Fig. 1 is the structural representation of the embodiment of the present invention 1, the present embodiment optical fiber collimator, its formation comprises the collimation lens 11 of same optical axis, collimator structure part 12, fiber stub 14, fiber stub fixture 13, fiber stub securing member 17, optical fiber 18 and tail part protection cover 19, the inside of described collimator structure part 12 is communicate cylindrical, described collimation lens 11 is fixed in the through hole of described collimator structure part 12 one end, described fiber stub 14 inserts in the through hole of described fiber stub fixture 13, and optical fiber 18 one end of fiber stub 14, be inserted in the through hole of described fiber stub securing member 17, with described fiber stub securing member 17 pressed fiber lock pins 14, described fiber stub fixture end face 16 and described fiber stub securing member 17 outside surfaces are reinforced fixing by laser bonding simultaneously, again described fiber stub fixture 13 is inserted in the through hole of described collimator structure part 12 other ends, by laser bonding, described collimator structure part end face 15 and the outside surface of described fiber stub fixture 13 are welded and fixed, finally tail part protection cover 19 is fixed on described fiber stub securing member 17.
Described collimation lens 11 is non-spherical lens or condenser lens.
4, optical fiber collimator according to claim 1, the outer mounting flange that is arranged with one of the collimator structure part (12) described in it is characterized in that.
Described fiber stub securing member 17 is fixed by laser bonding with the appearance junction of fiber stub fixture 13.
The Method of Adjustment of described optical fiber collimator, the method comprises the following steps:
1. described collimation lens 11 is welded in the through hole of outside collimator structure part 12;
2. optical fiber 18 is weldingly fixed in fiber stub 14;
3. described fiber stub 14 inserts in described fiber stub fixture 13, and be inserted in the through hole of described fiber stub securing member 17 optical fiber one end;
4. described fiber stub securing member 17 passes through screw thread pressed fiber lock pin 13 one end, and is fixed by laser bonding with the end face 16 of fiber stub fixture 13;
5. described fiber stub fixture 13 is inserted in the through hole of described optical fiber collimator 12;
6. by described fiber stub fixture 13, regulate fiber end face to the distance between collimation lens, and by the angle of divergence of long-focus lens and laser beam analyzer observation output facula, in the time that the angle of divergence reaches requirement, the end face 15 of fiber stub fixture 13 outside surfaces and collimator structure part 12 is fixed with laser spot welding;
7. finally with the forthright and sincere hungry area of low venting, tail optical fiber protective sleeve 19 is fixing with described fiber stub securing member 17, to protect collimating apparatus afterbody optical fiber 18.
Fig. 2 is the embodiment of the present invention 2, and the present embodiment optical fiber collimator comprises collimation lens 21, collimator structure part 22, fiber stub fixture 23, fiber stub 24, fiber stub securing member 27, optical fiber 28 and tail part protection cover 29.This collimator structure part 22 has comprised mounting flange 210.Difference from Example 1 is that the light output end of the optical fiber 28 in fiber stub 24 is inclined-plane, and fiber stub fixture 26 endoporus need to have different angles of inclination according to the angle of inclination difference of the light output end of optical fiber 28.This angle of inclination prevents in high power work time feedback influence light source performance, in the time adopting polarization maintaining optical fibre, it is a fixed value that this angle can also make the output light polarization direction of collimating apparatus upper surface relative and flange 210, be that polarization direction and the sensing of optical fiber collimator hot spot have uniqueness, the step of the detection polarization direction while having reduced assembling, has improved efficiency of assembling.
Claims (5)
1. an optical fiber collimator, be characterised in that its formation comprises collimation lens, collimator structure part, fiber stub fixture, fiber stub, fiber stub securing member, optical fiber and the tail part protection cover of same optical axis, described collimator structure part inside is communicate cylindrical, and described collimation lens is fixed in the through hole of described collimator structure part one end; Described fiber stub inserts in the through hole of described fiber stub fixture, and optical fiber one end of fiber stub is inserted in the through hole of described fiber stub securing member, with described fiber stub securing member pressed fiber lock pin, described fiber stub fixture end face and described fiber stub securing member outside surface are reinforced fixing by laser bonding simultaneously; Again described fiber stub fixture is inserted in the through hole of the described collimator structure part other end, by laser bonding, described collimator structure part end face and described fiber stub fixture are welded and fixed; Finally tail part protection cover is fixed on described fiber stub securing member.
2. optical fiber collimator according to claim 1, is characterized in that described collimation lens is non-spherical lens or condenser lens.
3. optical fiber collimator according to claim 1, is characterized in that described fiber end face is plane or inclined-plane.
4. optical fiber collimator according to claim 1, is characterized in that the periphery of described collimator structure part can be provided with the mounting flange of one.
5. the Method of Adjustment of optical fiber collimator claimed in claim 1, is characterized in that the method comprises the following steps:
1. described collimation lens is welded in the through hole of outside collimator structure part;
2. optical fiber is weldingly fixed in fiber stub;
3. described fiber stub inserts in described fiber stub fixture, and be inserted in the through hole of described fiber stub securing member optical fiber one end;
4. described fiber stub securing member passes through screw thread pressed fiber lock pin one end, and is fixed by laser bonding with the outside surface of fiber stub fixture;
5. described fiber stub fixture is inserted in the through hole of described optical fiber collimator;
6. by described fiber stub fixture, regulate fiber end face to the distance between collimation lens, and by the angle of divergence of long-focus lens and laser beam analyzer observation output facula, in the time that the angle of divergence reaches requirement, the junction of fiber stub fixture and collimator structure part outside surface is fixed with laser spot welding;
7. finally with the forthright and sincere hungry area of low venting, tail optical fiber protective sleeve and described fiber stub securing member are fixed, to protect collimating apparatus afterbody optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126664.2A CN103901546B (en) | 2014-03-31 | 2014-03-31 | Optical fiber collimator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410126664.2A CN103901546B (en) | 2014-03-31 | 2014-03-31 | Optical fiber collimator |
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| CN103901546B CN103901546B (en) | 2016-03-09 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317009A (en) * | 2014-09-30 | 2015-01-28 | 武汉锐泽科技发展有限公司 | Fiber jumper wire joint and large-power semiconductor laser assembly |
| CN104503029A (en) * | 2014-11-25 | 2015-04-08 | 武汉电信器件有限公司 | Pluggable type adapter assembly for coupling of collimating optical path |
| CN104548182A (en) * | 2014-12-29 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Ultraviolet-infrared two-waveband semiconductor laser quick sterilization system used for indoor air sterilization of medical cabin |
| CN108594374A (en) * | 2018-06-06 | 2018-09-28 | 东莞理工学院 | A kind of optical fiber pigtail and processing method |
| CN110031936A (en) * | 2019-04-02 | 2019-07-19 | 武汉光迅科技股份有限公司 | A kind of laser melting formula optical fiber collimator and its tools and method |
| WO2020024284A1 (en) * | 2018-08-03 | 2020-02-06 | Lumentum Operations Llc | Laser welding for planar lightwave circuit–fiber packaging |
| CN111399239A (en) * | 2020-05-15 | 2020-07-10 | 厦门行者科创科技有限公司 | Laser dodging device |
| CN113866906A (en) * | 2020-06-30 | 2021-12-31 | 山东华光光电子股份有限公司 | High-power optical fiber coupler and manufacturing method thereof |
| CN114690327A (en) * | 2022-04-22 | 2022-07-01 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Optical fiber coupling space light path structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101952757B1 (en) * | 2017-02-13 | 2019-02-27 | 주식회사 이오테크닉스 | Optical couper and laser appartus comprising the same |
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| CN201051161Y (en) * | 2007-04-28 | 2008-04-23 | 福州高意通讯有限公司 | A single optical fiber calibrator |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317009A (en) * | 2014-09-30 | 2015-01-28 | 武汉锐泽科技发展有限公司 | Fiber jumper wire joint and large-power semiconductor laser assembly |
| CN104503029A (en) * | 2014-11-25 | 2015-04-08 | 武汉电信器件有限公司 | Pluggable type adapter assembly for coupling of collimating optical path |
| CN104503029B (en) * | 2014-11-25 | 2017-11-17 | 武汉电信器件有限公司 | A kind of pluggable type adapter assembly for collimated light path coupling |
| CN104548182A (en) * | 2014-12-29 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Ultraviolet-infrared two-waveband semiconductor laser quick sterilization system used for indoor air sterilization of medical cabin |
| CN108594374A (en) * | 2018-06-06 | 2018-09-28 | 东莞理工学院 | A kind of optical fiber pigtail and processing method |
| WO2020024284A1 (en) * | 2018-08-03 | 2020-02-06 | Lumentum Operations Llc | Laser welding for planar lightwave circuit–fiber packaging |
| US11181690B2 (en) | 2018-08-03 | 2021-11-23 | Lumentum Operations Llc | Coupling between a waveguide device and fiber stub |
| CN110031936A (en) * | 2019-04-02 | 2019-07-19 | 武汉光迅科技股份有限公司 | A kind of laser melting formula optical fiber collimator and its tools and method |
| CN111399239A (en) * | 2020-05-15 | 2020-07-10 | 厦门行者科创科技有限公司 | Laser dodging device |
| CN113866906A (en) * | 2020-06-30 | 2021-12-31 | 山东华光光电子股份有限公司 | High-power optical fiber coupler and manufacturing method thereof |
| CN113866906B (en) * | 2020-06-30 | 2023-03-14 | 山东华光光电子股份有限公司 | High-power optical fiber coupler and manufacturing method thereof |
| CN114690327A (en) * | 2022-04-22 | 2022-07-01 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Optical fiber coupling space light path structure |
| CN114690327B (en) * | 2022-04-22 | 2024-05-10 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Optical fiber coupling space light path structure |
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| CN103901546B (en) | 2016-03-09 |
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