CN201408275Y - Oblique-wedge-shaped cylindrical lens optical fiber - Google Patents
Oblique-wedge-shaped cylindrical lens optical fiber Download PDFInfo
- Publication number
- CN201408275Y CN201408275Y CN200820230595XU CN200820230595U CN201408275Y CN 201408275 Y CN201408275 Y CN 201408275Y CN 200820230595X U CN200820230595X U CN 200820230595XU CN 200820230595 U CN200820230595 U CN 200820230595U CN 201408275 Y CN201408275 Y CN 201408275Y
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- wedge
- cylindrical lens
- angle
- oblique
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 48
- 239000000835 fiber Substances 0.000 claims description 21
- 230000010287 polarization Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 abstract description 24
- 230000008878 coupling Effects 0.000 abstract description 23
- 238000005859 coupling reaction Methods 0.000 abstract description 23
- 239000004065 semiconductor Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model discloses an oblique-wedge-shaped cylindrical lens optical fiber used for being coupled with a 980nm semiconductor laser. The end of the optical fiber is ground to be an oblique wedge shape, the top of which is baked to be a cylindrical lens, and the angle theta of inclination of the oblique wedge shape is 6-10 degrees, most preferably 8 degrees. The optical fiber structure leadsthe phase positions and the mode field radiuses of the laser and the optical fiber to be matched with each other, and well combines the characteristic of high coupling efficiency of the oblique-wedge-shaped optical fiber with the coupling efficiency reaching up to 80%; meanwhile, the optical fiber structure can effectively lead reflected light to be emitted at an angle in relation to the axis ofthe optical fiber so as to well protect a PUMP laser and prolong the service life of the laser.
Description
Technical field
The utility model relates to a kind of wedge shape cylindrical lens optical fiber, particularly a kind of inclined wedge-shaped cylindrical lens optical fiber that is used for 980 Nano semiconductor laser instruments couplings.
Background technology
Semiconductor laser (LD) is owing to the singularity of its physical arrangement, and the laser beam that sends is a kind of Gaussian beam of ellipse.The center of curvature of Gaussian beam spherical wave front is not or not the center of circle, but constantly change with the variation of propagation distance Z, light intensity belongs to Gaussian distribution, simultaneously, Gaussian beam is different at the longitudinal direction degree of divergence, is parallel to X-direction, and divergence speed is slower, and perpendicular to Y direction, the speed of beam divergence is very fast.
Fiber coupling technique is the gordian technique that influences fibre system, and optical fibre microlens then is the critical component of optical fiber coupling.The coupling of semiconductor laser and single-mode fiber comes down to the matching problem of mould field.The light that the optically-coupled that semiconductor laser sends enters in the optical fiber is many more, and the distance of fiber-optic communications traffic is just far away more, and repeater span is just far away more.Therefore the coupling efficiency that improves laser instrument and optical fiber is very important means that increase repeater span.Because laser instrument has bigger divergent beams angle in vertical and cutting plane direction, so, simple telescopic coupling can't obtain higher coupling efficiency, in order to reduce coupling loss between the two, the spot size of laser instrument should mate mutually with the spot size of optical fiber, and this can use lens to realize by between.Up to now, have the method for carrying out pattern match with multiple difform lens, as column, hemisphere, quadrangular pyramid shape semiellipse, confocal lens method and column and GRIN Lens combined method etc.For wedge shape lens pillar optical fiber, be equivalent on the flush end fiber facet, add a lenticule post, play the effect of a transmission factor.Consistent at the XZ cross section structure with the conical fiber structure, can be complementary with the laser instrument spot size at the YZ cross section structure, not only can reduce the coupling loss that phase place does not match and brings, and reduce the coupling loss that spot size does not match and brings, improve coupling efficiency.
Wedge shape cylindrical lens optical fiber is mainly used in the coupling of 980nmPUMP laser instrument to optical fiber, at elongated shape light spot laser utensil the high coupling efficiency that can reach more than 70% is arranged.But the light part that laser instrument sends reflects on the cuneiform optical fiber surface, and the light that reflects is directly got on the laser instrument along former road, causes the damage of laser instrument easily, influences the serviceable life of laser instrument.
The utility model content
The purpose of this utility model be to provide a kind of coupling efficiency height, can antireflection, the PUMP laser instrument had the inclined wedge-shaped lens pillar optical fiber of protective effect.
To achieve these goals, the technical solution of the utility model is: laser fiber is ground into inclined wedge-shaped with the end face of laser instrument coupling, and spherical lens is fired or is ground at the top of inclined wedge-shaped.The angle theta of the end face of inclined wedge-shaped lens fiber and optical fiber vertical plane is 6～10 °, and the best is 8 °, and the radius of curvature R of spherical lens is the 4.0-7.5 micron, and the angle of wedge surface is 50-100 °.
In addition, for avoiding touching of optical fiber connector and laser instrument, make things convenient for coordinative composition of equipments to install, wedge is polished the little chamfering of stepping down, the plane of this little chamfering of stepping down and the angle of shaft axis of optic fibre are 10-50 °.
This inclined wedge-shaped lens pillar optical fiber can be a kind of of single-mode fiber, single-mode polarization maintaining fiber.
The utility model adopts said structure; the phase place and the spot size of laser instrument and optical fiber are complementary; combine the high characteristic of cuneiform optical fiber coupling efficiency well; coupling efficiency is up to 80%; the light that will reflect is with the direction ejaculation angled with shaft axis of optic fibre simultaneously; well protect the PUMP laser instrument, prolonged the serviceable life of laser instrument.
Description of drawings
Fig. 1 is a wedge design diagram of the present utility model
Fig. 2 is a perspective view of the present utility model
Fig. 3 is the coupling synoptic diagram of the utility model and PUMP laser instrument
Fig. 4 is the coupling synoptic diagram of prior art cuneiform optical fiber and PUMP laser instrument
Reference numeral
1-inclined wedge-shaped cylindrical lens optical fiber 2-PUMP laser instrument 3-wedge
The 4-cylindrical lens 5-little chamfering 6-fiber end face of stepping down
The little chamfering of angle 8-of 7-fiber end face and optical fiber vertical plane and the angle of shaft axis of optic fibre
9-wedge shape cylindrical lens optical fiber
Embodiment
As shown in Figure 1 and Figure 2, inclined wedge-shaped lens pillar optical fiber, it comprises an optical fiber 1, one end of optical fiber is worn into inclined wedge-shaped 3, the angle of inclination of wedge, and promptly fiber end face 6 is 8 ° with the angle 7 of optical fiber vertical plane, the top of inclined wedge-shaped is fired into cylindrical lens 4, the radius of curvature R of cylindrical lens is 5 microns, and the wedge top is ground out the little chamfering 5 of stepping down, and the plane of this little chamfering 5 of stepping down and the angle of shaft axis of optic fibre are 30 °.
Fig. 3 is the coupling synoptic diagram of the utility model and PUMP laser instrument, the inclined wedge-shaped cylindrical lens optical fiber of the utility model design, can make reflected light with the offset direction ejaculation angled with shaft axis of optic fibre, reflected light returns along former road when having avoided among Fig. 4 the coupling of prior art cuneiform optical fiber and laser instrument, and laser instrument is caused damage, prolonged the serviceable life of laser instrument.The acceptance angle of cylindrical lens 4 is big, can many absorbing light, help optically-coupled is come in, and improved coupling efficiency.
Claims (6)
1, a kind of wedge shape cylindrical lens optical fiber, wedge shape is made in the end that itself and laser instrument are coupled, tapered end is made cylindrical lens, it is characterized in that: the end face of described wedge-shaped lens optical fiber and the vertical plane of optical fiber are angle, and promptly this optical fiber is inclined wedge-shaped cylindrical lens optical fiber.
2, wedge shape cylindrical lens optical fiber as claimed in claim 1, it is characterized in that: the angle angle of the end face of described inclined wedge-shaped lens fiber and optical fiber vertical plane is 6-10 °.
3, wedge shape cylindrical lens optical fiber as claimed in claim 1, it is characterized in that: the wedge surface angle of described wedge is 50-100 °.
4, wedge shape cylindrical lens optical fiber as claimed in claim 1 is characterized in that: make the little chamfering of stepping down for one jiao of described wedge surface, the angle of this step down little chamfering plane and shaft axis of optic fibre is 10-50 °.
5, wedge shape cylindrical lens optical fiber as claimed in claim 1, it is characterized in that: the radius of curvature R of described cylindrical lens is the 4.0-7.5 micron.
6, wedge shape cylindrical lens optical fiber as claimed in claim 1, it is characterized in that: described optical fiber can be single-mode fiber, single-mode polarization maintaining fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820230595XU CN201408275Y (en) | 2008-12-25 | 2008-12-25 | Oblique-wedge-shaped cylindrical lens optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820230595XU CN201408275Y (en) | 2008-12-25 | 2008-12-25 | Oblique-wedge-shaped cylindrical lens optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408275Y true CN201408275Y (en) | 2010-02-17 |
Family
ID=41679213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820230595XU Expired - Lifetime CN201408275Y (en) | 2008-12-25 | 2008-12-25 | Oblique-wedge-shaped cylindrical lens optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408275Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912254A (en) * | 2010-07-27 | 2010-12-15 | 东南大学 | Common path optical coherence tomography system fiber optic probe |
| CN102914816A (en) * | 2011-08-03 | 2013-02-06 | 奥兰若技术有限公司 | Optical fiber and method for producing coupling device thereof |
| CN103424802A (en) * | 2012-05-17 | 2013-12-04 | 鸿富锦精密工业（深圳）有限公司 | Optical fiber and optically coupled system |
| CN103811985A (en) * | 2014-03-05 | 2014-05-21 | 中国科学院半导体研究所 | Miniature ErYb co-doped superfluorescent optical fiber light source |
| CN104570223A (en) * | 2015-02-03 | 2015-04-29 | 中国电子科技集团公司第四十六研究所 | Multidirectional-irradiation passive optical fiber end for medical clinical treatment |
| CN114526835A (en) * | 2021-12-31 | 2022-05-24 | 西安和其光电科技股份有限公司 | Spherical end face fluorescent optical fiber structure and preparation method thereof |
| CN115944383A (en) * | 2023-03-13 | 2023-04-11 | 武汉诺伊激光科技有限公司 | Optical coupling device for laser medical treatment |
-
2008
- 2008-12-25 CN CN200820230595XU patent/CN201408275Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912254A (en) * | 2010-07-27 | 2010-12-15 | 东南大学 | Common path optical coherence tomography system fiber optic probe |
| CN102914816A (en) * | 2011-08-03 | 2013-02-06 | 奥兰若技术有限公司 | Optical fiber and method for producing coupling device thereof |
| CN103424802A (en) * | 2012-05-17 | 2013-12-04 | 鸿富锦精密工业（深圳）有限公司 | Optical fiber and optically coupled system |
| CN103811985A (en) * | 2014-03-05 | 2014-05-21 | 中国科学院半导体研究所 | Miniature ErYb co-doped superfluorescent optical fiber light source |
| CN103811985B (en) * | 2014-03-05 | 2017-01-18 | 中国科学院半导体研究所 | Miniature ErYb co-doped superfluorescent optical fiber light source |
| CN104570223A (en) * | 2015-02-03 | 2015-04-29 | 中国电子科技集团公司第四十六研究所 | Multidirectional-irradiation passive optical fiber end for medical clinical treatment |
| CN104570223B (en) * | 2015-02-03 | 2017-09-26 | 中国电子科技集团公司第四十六研究所 | A kind of clinical medicine treatment irradiates passive fiber end with multi-direction |
| CN114526835A (en) * | 2021-12-31 | 2022-05-24 | 西安和其光电科技股份有限公司 | Spherical end face fluorescent optical fiber structure and preparation method thereof |
| CN115944383A (en) * | 2023-03-13 | 2023-04-11 | 武汉诺伊激光科技有限公司 | Optical coupling device for laser medical treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201408275Y (en) | Oblique-wedge-shaped cylindrical lens optical fiber | |
| CN102681109B (en) | Large-caliber light beam coupler | |
| US20130142487A1 (en) | Multi-core optical fiber interconnection structure and method for manufacturing multi-core optical fiber interconnection structure | |
| CN101813806B (en) | Miniature steering and coupling element between optical interconnected chips | |
| CN101435918B (en) | Pigtail fiber coupling output device for laser diode array/area array | |
| JPH11218641A (en) | Optical fiber with lens and laser module | |
| JPH08136772A (en) | Optical fiber interface for coupling light source and its production | |
| CN106908911A (en) | A kind of optical transceiver module for multidiameter delay transmission | |
| CN104898215A (en) | Simple coupled parallel light transmit-receive engine used for interconnection between boards | |
| KR101802985B1 (en) | Apparatus for opticcal fiber laser output using optical contact | |
| CN202693842U (en) | Double-curvature lensed fiber | |
| CN103794973A (en) | Fiber laser, gain fiber, method for manufacturing gain fiber, and beam shaping system | |
| CN100456581C (en) | Semiconductor laser shaper | |
| US9310593B2 (en) | Holographic solar coupler | |
| CN211698277U (en) | Optical fiber collimator | |
| CN220271678U (en) | Optical device for shaping laser beam | |
| CN204065464U (en) | The online optoisolator of a kind of liquid cooling hectowatt grade multimode optical fiber | |
| CN2754113Y (en) | Semiconductor laser optical beam shaping unit | |
| CN212009033U (en) | Lens optical fiber for packaging silicon optical chip and silicon optical chip packaging structure | |
| CN212060648U (en) | Orthogonal coupling light path | |
| CN202676953U (en) | Optical fiber inserted core | |
| CN202939329U (en) | lens fiber | |
| CN101144877A (en) | High Power Diode Laser Array Beam Collimation System | |
| CN218298576U (en) | Wide-spot laser cladding head with optical fiber output | |
| CN203643626U (en) | Aspheric optical lens and lens sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |
|
| CX01 | Expiry of patent term |