WO2016041416A1 - Dispositif et procédé de fuite de mode de gaine de fibre optique - Google Patents

Dispositif et procédé de fuite de mode de gaine de fibre optique Download PDF

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Publication number
WO2016041416A1
WO2016041416A1 PCT/CN2015/085635 CN2015085635W WO2016041416A1 WO 2016041416 A1 WO2016041416 A1 WO 2016041416A1 CN 2015085635 W CN2015085635 W CN 2015085635W WO 2016041416 A1 WO2016041416 A1 WO 2016041416A1
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WIPO (PCT)
Prior art keywords
optical fiber
cladding
fiber
container
cladding mode
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Application number
PCT/CN2015/085635
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English (en)
Chinese (zh)
Inventor
方强
方笑尘
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方强
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Publication date
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Publication of WO2016041416A1 publication Critical patent/WO2016041416A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/245—Removing protective coverings of light guides before coupling

Definitions

  • the invention relates to a fiber cladding mode leakage method and device, in particular to a high power fiber cladding mode leakage method and device, which can be widely applied in a high power laser system.
  • the method of eliminating the mode in the cladding is mainly the method proposed by the Swedish OPTOSKAND company.
  • One method is to remove the coating layer on a section near the end of the fiber, and to externally coat the fiber cladding layer, so that the light in the fiber cladding layer can be scattered in a certain length of the region; another method is The coating layer is removed from a section near the end of the fiber, and the light in the cladding is first guided to a larger area by a material such as high refractive index glass and glue, and then the cladding is removed by a textured surface and a barrier method. In the light.
  • the second method can better eliminate the cladding mode in a shorter area.
  • the light removed by the above method is typically absorbed by an opaque sleeve and baffle disposed around the perimeter of the fiber, with heat being carried away by the cooling device.
  • the current technical solutions are complicated to implement, and the implementation of the device is expensive.
  • the method for leakage of the fiber cladding mode is composed of at least the following two steps: 1) removing the coating layer on a section of the optical fiber to expose the cladding layer; 2) immersing the bare fiber portion in a static state in which the refractive index is greater than or equal to the refractive index of the fiber cladding layer. Or in a flowing liquid substance.
  • the optical fiber cladding mode leakage device is composed of a container, an optical fiber and a liquid material having a refractive index greater than or equal to a refractive index of the optical fiber cladding.
  • the front and rear opaque end plates of the container are provided with through holes; the optical fibers pass through the front and rear through holes on the container. And sealingly fixed thereon, the coating layer outside the fiber cladding in the container is removed, and the cladding is exposed; the liquid substance is located in the container and covers the bare fiber, and the liquid substance is either stationary or flowing.
  • the liquid substance is either glycerol or polyglycerol.
  • At least one opaque baffle is disposed in the container in the direction of the optical fiber axis of the vertical fiber, and the baffle is provided with a hole matching the size of the fiber, and the optical fiber passes through the hole.
  • the effect of the present invention is that the complexity of the optical fiber leakage device can be greatly reduced, and the manufacturing cost can be reduced.
  • FIG. 1 is a schematic side view showing a first type of optical fiber cladding mode leakage device according to the technical solution of the present invention.
  • FIG. 2 is a schematic side view showing a second optical fiber cladding mode leakage device according to the technical solution of the present invention.
  • the fiber cladding mode leakage method proposed by the present invention comprises at least two steps: 1) removing a portion of the organic coating layer outside the fiber cladding layer to expose the cladding layer; 2) immersing the bare fiber in a cladding layer having a refractive index greater than or equal to Among the liquid materials of refractive index, the liquid substances may be static or flowable.
  • the light in the cladding can be led out of the cladding. Since light leaking from the cladding generates heat, when heat is small, heat can be dissipated to the surrounding environment by thermal convection and heat conduction of the liquid material. When the heat is large, the heat can be quickly taken out by the flow of the liquid substance.
  • FIG. 1 is a schematic side view of a fiber-optic cladding mode leakage device according to the technical solution of the present invention, which is composed of a container 1, an optical fiber 2 and a liquid substance 3.
  • the optical fiber 2 passes through holes in the front and rear opaque end plates of the container 1 and is sealed and fixed on the front and rear end plates.
  • the optical fiber is composed of a core 21, a cladding 22 and a coating layer 23.
  • the coating layer of the optical fiber located inside the container is peeled off, and the cladding is directly covered by the liquid substance 3 having a refractive index greater than or equal to the refractive index of the cladding.
  • the liquid substance in the container is statically set, and the heat generated by the light is dissipated in the surrounding environment by internal convection and heat conduction; if the leakage light power is large, the container needs to be placed in the container.
  • the liquid substance circulates with the liquid substance outside the container to carry the heat generated by the light.
  • the relatively inexpensive liquid materials commonly used are glycerin and polyglycerols.
  • FIG. 2 is a schematic side view of a second type of optical fiber cladding mode leakage device according to the technical solution of the present invention, which is composed of a container 1, an optical fiber 2, a liquid substance 3, and baffles 41, 42.
  • the opaque baffles 41 and 42 are disposed in the container 1 in a manner substantially perpendicular to the optical fibers 2, and the optical fibers 2 sequentially pass through holes in the front bezel of the container 1, holes in the baffle 41, holes in the baffle 42 and A hole in the rear end plate of the container 1 is sealed and fixed to the front and rear end plates.
  • the optical fiber includes a core 21, a cladding 22, and a coating layer 23.
  • the coating layer of the optical fiber located inside the container is peeled off to expose the cladding, and the cladding is directly covered by the liquid substance 3 having a refractive index greater than that of the cladding.
  • two baffles are provided.
  • the number of baffles can be set as desired.
  • the baffle has two functions: one is to support the fiber optic device. For the mode of small angle transmission in the cladding, a long bare fiber is needed to leak the light out, so the middle support can improve the reliability of the device. Yet another is that the baffle can provide relatively uniform absorption of leakage light within the device.
  • the liquid substance in the container is statically set, and the heat generated by the light is dissipated in the surrounding environment by internal convection and heat conduction; if the leakage light power is large, the container needs to be placed in the container.
  • the liquid substance circulates with the liquid substance outside the container to carry the heat generated by the light.
  • the relatively inexpensive liquid materials commonly used are glycerin and polyglycerols.
  • the fiber cladding mode leakage method and the fiber cladding mode leakage device proposed by the invention can reduce the complexity of the device and further reduce the cost.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de fuite de mode de gaine de fibre optique, en particulier un dispositif et un procédé de fuite de mode de gaine de fibre optique haute puissance, qui peut s'appliquer largement à des systèmes laser haute puissance. Le procédé de fuite de mode de gaine de fibre optique comprend au moins les deux étapes suivantes : 1) retrait d'un revêtement (23) sur une section d'une fibre optique (2) pour exposer une gaine (22); et 2) immersion de la partie nue de fibre optique dans une substance liquide (3) en écoulement ou stationnaire ayant un indice de réfraction supérieur à celui de la gaine de la fibre optique. La complexité du dispositif de fuite de fibre optique peut être réduite de façon remarquable et le coût de production peut être abaissé.
PCT/CN2015/085635 2014-09-17 2015-07-30 Dispositif et procédé de fuite de mode de gaine de fibre optique WO2016041416A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410504453.8A CN105891941A (zh) 2014-09-17 2014-09-17 光纤包层模泄漏方法及装置
CN201410504453.8 2014-09-17

Publications (1)

Publication Number Publication Date
WO2016041416A1 true WO2016041416A1 (fr) 2016-03-24

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Application Number Title Priority Date Filing Date
PCT/CN2015/085635 WO2016041416A1 (fr) 2014-09-17 2015-07-30 Dispositif et procédé de fuite de mode de gaine de fibre optique

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CN (1) CN105891941A (fr)
WO (1) WO2016041416A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108346966A (zh) * 2018-03-22 2018-07-31 中国科学院西安光学精密机械研究所 一种高功率光纤包层光剥除器
CN113064235A (zh) * 2021-03-22 2021-07-02 威海光子信息技术产业研究院有限公司 一种利用激光去除光纤包层的装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678273A (en) * 1983-12-23 1987-07-07 Radians Ab High power optical fiber with improved covering
EP1096285A2 (fr) * 1999-11-01 2001-05-02 GSI Lumonics Ltd. Couplage d'un laser à une fibre optique
CN201757791U (zh) * 2010-08-02 2011-03-09 武汉逸飞激光设备有限公司 用于激光传输的浸泡式水冷光纤头
CN201845110U (zh) * 2010-10-26 2011-05-25 武汉高晟知光科技有限公司 一种传输高功率激光的光纤端部结构
CN103064151A (zh) * 2012-12-05 2013-04-24 清华大学 一种具有流体冷却的光纤耦合器装置
CN104037598A (zh) * 2014-06-17 2014-09-10 中国人民解放军国防科学技术大学 一种高功率光纤高效冷却方法

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JPH01316705A (ja) * 1988-06-17 1989-12-21 Fuji Photo Optical Co Ltd 高エネルギレーザ光の伝送装置
SE509706C2 (sv) * 1996-07-05 1999-03-01 Permanova Lasersystem Ab Optisk fiberkabel
CN101718916A (zh) * 2009-12-09 2010-06-02 中国科学院上海光学精密机械研究所 剥离双包层光纤中剩余泵浦光的方法
CN103502857A (zh) * 2011-04-28 2014-01-08 住友电气工业株式会社 光缆
CA2810351C (fr) * 2013-03-13 2016-05-10 Institut National D'optique Ensemble extracteur pour pompe optique a deux indices
CN103560383A (zh) * 2013-11-19 2014-02-05 山东海富光子科技股份有限公司 一种高功率光纤包层模式滤除器
CN103676002B (zh) * 2013-11-29 2015-08-26 深圳市创鑫激光股份有限公司 高功率光纤剥模器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678273A (en) * 1983-12-23 1987-07-07 Radians Ab High power optical fiber with improved covering
EP1096285A2 (fr) * 1999-11-01 2001-05-02 GSI Lumonics Ltd. Couplage d'un laser à une fibre optique
CN201757791U (zh) * 2010-08-02 2011-03-09 武汉逸飞激光设备有限公司 用于激光传输的浸泡式水冷光纤头
CN201845110U (zh) * 2010-10-26 2011-05-25 武汉高晟知光科技有限公司 一种传输高功率激光的光纤端部结构
CN103064151A (zh) * 2012-12-05 2013-04-24 清华大学 一种具有流体冷却的光纤耦合器装置
CN104037598A (zh) * 2014-06-17 2014-09-10 中国人民解放军国防科学技术大学 一种高功率光纤高效冷却方法

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