CN1323304C - Multi mould multi-optical fiber power coupler and its preparation method - Google Patents
Multi mould multi-optical fiber power coupler and its preparation method Download PDFInfo
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- CN1323304C CN1323304C CNB031109071A CN03110907A CN1323304C CN 1323304 C CN1323304 C CN 1323304C CN B031109071 A CNB031109071 A CN B031109071A CN 03110907 A CN03110907 A CN 03110907A CN 1323304 C CN1323304 C CN 1323304C
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Abstract
The present invention relates to an improvement of a multi-optical fiber beam collector, which is applied to the fields of semiconductor laser optical fiber modules and optical fiber lasers. The present invention comprises a globe lens 1, a self-focusing lens 2, sleeve pipes 3, 7, a sleeve barrel 4, sleeve cores 5, 8 and multi-mode optical fibers 6, 9. The present invention obtains a high-efficiency compact multi-mode multi-optical fiber power coupler in virtue of the light beam focusing of lenses; the coupler obtains the high power density output of single optical fibers by integrating and packing to make structure compact and output light beams centralized. The performance, the reliability and the stability of the coupler are enhanced. The multi-mode multi-optical fiber power coupler made by the present invention is good for enhancing laser output light beam characteristics. The present invention also provides a simple method for enhancing power output. A simple packing device made by the present invention can outputs light output by a plurality of lasers at high efficiency through one single optical fiber. The present invention can be applied to pumping high power optical fiber lasers; the coupling efficiency of the present invention can reach more than 90%.
Description
Technical field: the invention belongs to shaping of laser multiple beam and coupling technique field, relate to the improvement that is applied in semiconductor laser optic module and the fiber laser field many optical fiber buncher.
Background technology: prepare the optical fiber buncher at present and form by multifiber.It is the every optical fiber that the output light of a plurality of low-power semiconductor lasers is coupled into the optical fiber buncher respectively, then these optical fiber boundlings is exported together.So just can obtain bigger power output, but the output light that this method obtains is still the set of a plurality of light beams, just multifiber simply gathers together, and the laser beam output facula that this method obtains is big, and power density is little.In application, must adopt other optical system to reduce spot size, increase power density.
Summary of the invention: adopt multifiber to make its output multiple beam and output facula big in order to solve background technology, power density is little, be connected needs with other optical fibre device increases other discrete problem such as optical element, also will reduce laser power efficient, the reliability of reduction system, the complicacy of increase system.The objective of the invention is to provides multiple optical fibers in multiple modes power coupler of a kind of high-level efficiency, compact package and preparation method thereof for obtaining high-power laser fiber module and pumping optical fiber laser instrument.
To achieve these goals, the method that the present invention takes is: as Fig. 1, shown in 2,3, choose one group of multimode optical fiber and preceding end-grain cutting is put down and removed coat; Choose the cover core, the front end insertion cover core of this group multimode optical fiber decoating is also fixedly made many fibre-optical splices; Choose sleeve pipe again, and with screw thread on its outer cover; Many fibre-optical splices are inserted sleeve pipes are made many ferrules and to its front end polishing, shape as shown in Figure 2; Choose another set of core again and fix another multimode optical fiber, make the single fiber joint, single fiber joint front end is polished; Choose another sleeve pipe again, and with screw thread on its outer cover, the single fiber joint is inserted this sleeve pipe, insert GRIN Lens and globe lens more successively, single fiber joint, GRIN Lens and globe lens are fixed in the sleeve pipe, make single fiber coupling sleeve pipe, and with the be coupled end grinding and polishing of globe lens in the sleeve pipe of single fiber, shape as shown in Figure 3; Choose a sleeve again and its internal diameter is put screw thread, many ferrules and single fiber coupling sleeve pipe are inserted from the sleeve two ends and the two is fixed in this sleeve, made the multiple optical fibers in multiple modes power coupler.
The inventive system comprises: globe lens, GRIN Lens, first sleeve pipe, second sleeve pipe, sleeve, output terminal multimode optical fiber cover core, the output terminal multimode optical fiber, input end fiber collar core, the input multimode fiber-optic bundle, the input multimode fiber-optic bundle is positioned at the inside of input end fiber collar core, input end fiber collar core is positioned at the inside of second sleeve pipe, the input multimode fiber-optic bundle, the front end face of the input end fiber collar core and second sleeve pipe at grade, the input multimode fiber-optic bundle, the opposite face of the front end face of the input end fiber collar core and second sleeve pipe is successively: globe lens, GRIN Lens, the output terminal multimode optical fiber overlaps core and output terminal multimode optical fiber, and is positioned at the inside of first sleeve pipe; The output terminal multimode optical fiber is positioned at output terminal multimode optical fiber cover in-core portion, and the front end face of output terminal multimode optical fiber, output terminal multimode optical fiber cover core and sleeve is in same plane; First sleeve pipe, second sleeve pipe are positioned at the inside of sleeve.
When the present invention worked: the laser that enters the input multimode fiber-optic bundle from the laser coupled of laser instrument output entered GRIN Lens after globe lens is collimated, line focus enters the output of output terminal multimode optical fiber.
The present invention has obtained a kind of efficient, compact multiple optical fibers in multiple modes power coupler by means of the light beam focusing of globe lens and GRIN Lens and the fine location adjustment of screw thread, device has obtained the output of single fiber high power density by integrated encapsulation, make structure compact more, output beam is more concentrated, has improved the reliability and stability of device performance.The multiple optical fibers in multiple modes power coupler that adopts the present invention to make is very favourable for improving the laser output beam characteristic, and a kind of short-cut method that improves power output also is provided.The present invention makes a kind of easy packaging, the output light of a plurality of laser instruments can be exported by the simple optical fiber high-level efficiency.This device also can be applied to the pumped high-power fiber laser.Coupling efficiency of the present invention can reach more than 90%.
Description of drawings:
Fig. 1 multiple optical fibers in multiple modes power coupler structural representation
Fig. 2 multiple optical fibers in multiple modes power coupler part-structure synoptic diagram
Fig. 3 multiple optical fibers in multiple modes power coupler part-structure synoptic diagram
Embodiment:
Describe the present invention in detail below in conjunction with the drawings and specific embodiments, Fig. 1,2,3 is multiple optical fibers in multiple modes power coupler structural representation.The inventive system comprises: globe lens 1, GRIN Lens 2, first sleeve pipe 3, second sleeve pipe 7, sleeve 4, output terminal multimode optical fiber cover core 5, output terminal multimode optical fiber 6, input end fiber collar core 8, input multimode fiber-optic bundle 9.
1) input multimode fiber-optic bundle 9 adopts quartz material to make multimode optical fiber, and multimode optical fiber can be chosen seven fibre cores, and the quartz material core diameter of multimode optical fiber can be chosen for 200 μ m, cladding diameter 210 μ m, and the numerical aperture of multimode optical fiber can be chosen for 0.16.
2) with 1) the long optical fiber of input multimode fiber-optic bundle 9 every optical fiber front end 21mm remove outer covering layers, cut flat; It is 630 μ m that input end fiber collar core 8 adopts internal diameter, and external diameter is 2.5mm, and length is that the zirconia material of 20mm is made; To import multimode fiber-optic bundle 9 and insert in the input end fiber collar cores 8, usefulness 353ND heat-curable glue will import multimode fiber-optic bundle 9 and input end fiber collar core 8 is fixing, makes many fibre-optical splices.Be 10 minutes set time, solidification temperature 100 degree.
3) first sleeve pipe, 3 employings, one segment length is the copper sleeve of 18mm, and internal diameter is 2.5mm, and external diameter is 8mm, fine thread on its outer cover, and pitch 0.5mm, degree of eccentricity is less than 1 ‰.Then with 2) in many fibre-optical splices insert in second sleeve pipe 7, add heat fixation with heat-curable glue, make many ferrules, on muller, many ferrules front end face is polished.As shown in Figure 2.
4) output terminal multimode optical fiber 6 is chosen a quartz material and is made multimode optical fiber, and the quartz material core diameter of multimode optical fiber can be chosen for 400 μ m, cladding diameter 220 μ m, and the numerical aperture of multimode optical fiber can be chosen for 0.22.
5) with 4) in the long optical fiber of output terminal multimode optical fiber 6 front end 21mm remove outer covering layer, cut flat; It is 420 μ m that output terminal multimode optical fiber cover core 5 adopts internal diameter, and external diameter is 2.5mm, and length is that the zirconia material of 20mm is made; Output terminal multimode optical fiber 6 is inserted in the output terminal multimode optical fiber cover core 5, with the 353ND heat-curable glue that output terminal multimode optical fiber 6 and output terminal multimode optical fiber cover core 5 is fixing, make the single fiber joint, grinding and polishing end face on buffing machine.
6) globe lens 1 adopts the K9 glass material, and the diameter of globe lens 1 is 2.5mm, surface plating single layer anti reflective coating, and material is MgF
2
7) GRIN Lens 2 adopts one 1/4 pitch GRIN Lens, and the diameter of GRIN Lens 2 is 2.5mm, and numerical aperture NA is 0.22, and length is 5mm, operating distance 0.25mm.Plate single layer anti reflective coating on the front/rear end of GRIN Lens 2, material is MgF
2
8) second sleeve pipe, 7 employings, one segment length is the copper sleeve of 18mm, internal diameter is 2.5mm, external diameter is 8mm, fine thread on its outer cover, pitch 0.5mm, degree of eccentricity is less than 1 ‰, inside pipe casing is filled and is solidified glue, with 5) in the end of polishing of single fiber joint insert from an end of second sleeve pipe 7, with 7) in GRIN Lens 2 and 6) in globe lens 1 insert from the other end of second sleeve pipe 7 successively, the front end of GRIN Lens 2 closely contacts with the polished surface of single fiber joint.Globe lens 1 slightly is absorbed in second sleeve pipe 7, and 7 heating are fixed on globe lens 1, GRIN Lens 2 and single fiber joint in second sleeve pipe 7 together to second sleeve pipe.With globe lens end face grinding and polishing on buffing machine of second sleeve pipe 7,, make single fiber coupling sleeve pipe up to just exposing globe lens.Planform as shown in Figure 3.
9) sleeve 4 is chosen the copper product sleeve that length is 30mm, and internal diameter is 8mm, and external diameter is 10mm, the internal sleeve screw thread, and pitch 0.5mm, degree of eccentricity is less than 1 ‰.Heat-curable glue is inserted with pressure in inside, avoids existing air.With 3) in many ferrules and 8) in single fiber coupling sleeve pipe be screwed into sleeve 4 respectively, light with certain power is input in the input multimode fiber-optic bundle 9 simultaneously, detect the output power size from the output optical fibre of output terminal multimode optical fiber 6, adjust the distance between sleeve 4 interior many ferrules and the single fiber coupling sleeve pipe, when obtaining maximum logical optical power efficiency, add heat fixation.
Selected parameter can be selected according to actual request for utilization in the foregoing description.
Claims (2)
1, a kind of preparation method of multiple optical fibers in multiple modes power coupler is characterized in that: choose one group of multimode optical fiber and preceding end-grain cutting is put down and removed coat; Choose the cover core, the front end insertion cover core of this group multimode optical fiber decoating is also fixedly made many fibre-optical splices; Choose sleeve pipe again, and with screw thread on its outer cover; Many fibre-optical splices are inserted that sleeve pipes are made many ferrules and to its front end polishing; Choose another set of core again and fix another multimode optical fiber, make the single fiber joint, single fiber joint front end is polished; Choose another sleeve pipe again, and with screw thread on its outer cover, the single fiber joint is inserted this sleeve pipe, insert GRIN Lens and globe lens more successively, single fiber joint, GRIN Lens and globe lens are fixed in the sleeve pipe, make single fiber coupling sleeve pipe, and with the be coupled end grinding and polishing of globe lens in the sleeve pipe of single fiber; Choose a sleeve again and its internal diameter is put screw thread, many ferrules and single fiber coupling sleeve pipe are inserted from the sleeve two ends and the two is fixed in this sleeve, made the multiple optical fibers in multiple modes power coupler.
2, a kind of multiple optical fibers in multiple modes power coupler, it comprises: input end fiber collar core (8), output terminal multimode optical fiber (6), it is characterized in that also comprising: globe lens (1), GRIN Lens (2), first sleeve pipe (3), second sleeve pipe (7), sleeve (4), output terminal multimode optical fiber cover core (5), output terminal multimode optical fiber (6), input multimode fiber-optic bundle (9) is positioned at the inside of input end fiber collar core (8), input end fiber collar core (8) is positioned at the inside of second sleeve pipe (7), input multimode fiber-optic bundle (9), the front end face of input end fiber collar core (8) and second sleeve pipe (7) at grade, input multimode fiber-optic bundle (9), the opposite face of the front end face of input end fiber collar core (8) and second sleeve pipe (7) is successively: globe lens (1), GRIN Lens (2), the output terminal multimode optical fiber overlaps core (5) and output terminal multimode optical fiber (6), and is positioned at the inside of first sleeve pipe (3); Output terminal multimode optical fiber (6) is positioned at output terminal multimode optical fiber cover core (5) inside, and the front end face of output terminal multimode optical fiber (6), output terminal multimode optical fiber cover core (5) and sleeve (4) is in same plane; First sleeve pipe (3), second sleeve pipe (7) are positioned at the inside of sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031109071A CN1323304C (en) | 2003-01-17 | 2003-01-17 | Multi mould multi-optical fiber power coupler and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031109071A CN1323304C (en) | 2003-01-17 | 2003-01-17 | Multi mould multi-optical fiber power coupler and its preparation method |
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| Publication Number | Publication Date |
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| CN1517731A CN1517731A (en) | 2004-08-04 |
| CN1323304C true CN1323304C (en) | 2007-06-27 |
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| CNB031109071A Expired - Fee Related CN1323304C (en) | 2003-01-17 | 2003-01-17 | Multi mould multi-optical fiber power coupler and its preparation method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8515278B2 (en) * | 2008-10-31 | 2013-08-20 | Futurewei Technologies, Inc. | Passive optical networks with mode coupling receivers |
| CN103513347A (en) * | 2013-09-06 | 2014-01-15 | 中国科学院苏州生物医学工程技术研究所 | Novel high-power semiconductor laser energy transmission fiber |
| CN107579412B (en) * | 2017-10-31 | 2021-02-26 | 中国工程物理研究院应用电子学研究所 | High-power optical fiber laser beam combiner |
| CN109459824B (en) * | 2018-11-12 | 2020-11-10 | 长春理工大学 | Two-stage space optical coupling device capable of improving single-mode optical fiber space optical coupling efficiency |
| CN109551103B (en) * | 2018-12-27 | 2023-04-11 | 桂林电子科技大学 | Water-guided laser processing device and method |
| CN109514078A (en) * | 2019-01-09 | 2019-03-26 | 桂林电子科技大学 | Water jet auxiliary laser system of processing and method |
| CN110618502A (en) * | 2019-04-28 | 2019-12-27 | 中航光电科技股份有限公司 | Insert core component |
| CN112363256A (en) * | 2020-11-25 | 2021-02-12 | 龙岩市帝昂光学有限公司 | Self-focusing lens for power coupler and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321409A (en) * | 1988-06-24 | 1989-12-27 | Oki Electric Ind Co Ltd | Mode converter |
| CN2068691U (en) * | 1990-07-10 | 1991-01-02 | 国家建筑材料工业局南京玻璃纤维研究设计院 | Multi-branch quartz optical fiber |
| JPH0815564A (en) * | 1994-06-27 | 1996-01-19 | Tokin Corp | Optical fiber connecting system and its connecting module |
| CN2482283Y (en) * | 2001-06-07 | 2002-03-13 | 三一光电子有限公司 | Optic wavelength division multiplex device |
| CN2506033Y (en) * | 2001-10-24 | 2002-08-14 | 福州康顺光通讯有限公司 | Film interference filter type wavelength division multiplexing device |
-
2003
- 2003-01-17 CN CNB031109071A patent/CN1323304C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01321409A (en) * | 1988-06-24 | 1989-12-27 | Oki Electric Ind Co Ltd | Mode converter |
| CN2068691U (en) * | 1990-07-10 | 1991-01-02 | 国家建筑材料工业局南京玻璃纤维研究设计院 | Multi-branch quartz optical fiber |
| JPH0815564A (en) * | 1994-06-27 | 1996-01-19 | Tokin Corp | Optical fiber connecting system and its connecting module |
| CN2482283Y (en) * | 2001-06-07 | 2002-03-13 | 三一光电子有限公司 | Optic wavelength division multiplex device |
| CN2506033Y (en) * | 2001-10-24 | 2002-08-14 | 福州康顺光通讯有限公司 | Film interference filter type wavelength division multiplexing device |
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| CN1517731A (en) | 2004-08-04 |
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