WO2016054986A1 - 传能光纤连接器 - Google Patents

传能光纤连接器 Download PDF

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WO2016054986A1
WO2016054986A1 PCT/CN2015/091158 CN2015091158W WO2016054986A1 WO 2016054986 A1 WO2016054986 A1 WO 2016054986A1 CN 2015091158 W CN2015091158 W CN 2015091158W WO 2016054986 A1 WO2016054986 A1 WO 2016054986A1
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fiber
energy
cladding
optical fiber
optical
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PCT/CN2015/091158
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French (fr)
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方强
方笑尘
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方强
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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
    • 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding

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  • the present invention relates to fiber optic connectors, particularly high power energy transmitting fiber optic connectors, which are widely used in high power laser transmission systems.
  • connection of energy-transmitting optical fibers is usually carried out by the Swedish OPTOSKAND company's technical solution, that is, two optical fiber heads with a cladding mode leakage function are used for optical fiber connection through an optical system.
  • this way optical connections are expensive.
  • An energy transmission optical fiber connector comprising two energy transmission fibers, a fiber alignment device, a light coupling liquid substance and two fiber cladding mode leakage devices, wherein: two energy transmission fibers are adjacent to a region of the fiber end The coating layer is peeled off and the cladding is exposed; the fiber alignment device aligns and abuts the ends of the two fibers; the optically coupled liquid material covers the end regions of the aligned two fibers either statically or fluently; The fiber cladding mode leakage devices are respectively located in exposed areas of the optical fibers on both sides of the fiber alignment device and are wrapped on the optical fibers.
  • the light coupling liquid material is glycerin or water.
  • the cladding mode leakage device is composed of transparent and opaque objects interposed on the fiber cladding layer and heat dissipating devices disposed outside the fiber cladding layer, wherein the refractive index of the transparent material is greater than or equal to the refractive index of the fiber cladding layer.
  • the transparent substance is a glue or a bond of glue and glass.
  • the cladding mode leakage device is a container filled with a liquid substance.
  • the bare fiber portion of the optical fiber is immersed in a liquid substance.
  • the refractive index of the liquid substance is greater than or equal to the refractive index of the fiber cladding layer, and the liquid substance is in a static state or a flowing state.
  • the liquid substance is glycerin or polyglycerol.
  • An energy-transmitting fiber optic connector consisting of two ends of an optical fiber, a container and a liquid substance welded together, characterized in that a liquid substance is placed in a container in a static or fluid state; two fiber-optic joints welded together on both sides The fiber coating layer in the adjacent region is peeled off and the cladding is exposed, and the fiber fusion joint and the bare portion are immersed in the liquid material, and the refractive index of the liquid material is greater than or equal to the refractive index of the fiber cladding.
  • the liquid substance is glycerin or polyglycerol.
  • the effect of the present invention is that the price of the energy transmission fiber connector can be greatly reduced.
  • FIG. 1 is a schematic structural view of a first technical solution of the energy transmission optical fiber connector according to the present invention.
  • FIG. 2 is a first structural diagram of a cladding mode leakage device in a first technical solution of the energy transmission fiber connector according to the present invention.
  • FIG. 3 is a second schematic structural diagram of a cladding mode leakage device in a first technical solution of the energy transmission fiber connector according to the present invention.
  • FIG. 4 is a schematic structural view of a second technical solution of the energy transmission optical fiber connector according to the present invention.
  • FIG. 1 is a schematic structural view of a first technical solution of the energy transmission optical fiber connector according to the present invention.
  • the energy transmission fiber connector is composed of two energy transmitting fibers 1 and 2, a fiber alignment device 3, a light coupling liquid substance 6 and two fiber cladding mode leakage devices 4 and 5.
  • the coating layers of the two energy-transmitting fibers 1 and 2 in a region close to the end of the fiber are peeled off and the cladding is exposed;
  • the fiber alignment device 3 aligns and closes the ends of the two fibers 1 and 2;
  • the optically coupled liquid substance 6 covers the end regions of the aligned two optical fibers 1 and 2 at rest or in a flowing manner;
  • the two optical cladding mode leakage devices 4 and 5 are respectively exposed to the bare fibers 1 and 2 of the optical fiber alignment device 3 Area and wrapped on fiber.
  • the photocoupled liquid material is typically water or glycerol.
  • the alignment device can employ a V-groove structure to achieve alignment of the fibers. Alignment of the fibers can also be achieved using precision metal or ceramic pins commonly used in communications.
  • the cladding mode leakage device can adopt the structure shown in FIG.
  • the cladding mode leakage device is comprised of transparent and opaque objects inter-coated on the fiber cladding and heat sinks disposed externally thereto, wherein the refractive index of the transparent material is greater than or equal to the refractive index of the fiber cladding.
  • 41, 43, and 45 are opaque substances coated on the bare fiber cladding layer 12.
  • 42 and 44 are transparent materials coated on the bare fiber cladding layer 12.
  • the refractive index of the transparent material is greater than or equal to the fiber cladding layer. Refractive index.
  • a heat sink 4S is provided outside these transparent and opaque substances.
  • the transparent and opaque substances interposed on the fiber cladding are not limited to the number shown in the drawing, and may be set according to different needs.
  • Opaque materials typically make highly thermally conductive metals, such as copper, which are typically glues and high refractive index glasses.
  • the heat sink 4S can use natural heat dissipation or water cooling according to the leakage power.
  • the working principle of the cladding mode leakage device is that the cladding mode leaks out of the optical fiber in the transparent material coating region, is absorbed by the opaque substance around the transparent region and becomes heat, and then the heat is dissipated by the heat sink.
  • the cladding mode leakage device can also adopt the structure shown in FIG.
  • the cladding mode leakage device is composed of a container 4R, a liquid substance 4Y contained in the 4R, and an optical fiber 1 in which the bare fiber portion is immersed in the liquid substance.
  • the refractive index of the liquid substance 4Y is greater than or equal to the refractive index of the cladding of the optical fiber, and the liquid substance may be static or flowable.
  • a plurality of fiber fixing points may be disposed in the container 4R as needed, so that the bare fiber is covered with a liquid substance, and the liquid substance is usually a substance having a refractive index greater than that of the quartz fiber such as glycerin or polyglycerin.
  • the working principle is as follows: the cladding mode leaks out of the optical fiber in the liquid substance and is absorbed into the heat by the liquid substance and the surrounding opaque substance. When the leakage power is small, the heat can be dissipated through the container; when the leakage power is large, the heat can be Take away by flowing liquid material.
  • the working principle of the energy transmission fiber is: the light in one fiber is coupled into the other fiber through the optical coupling liquid substance, and part of the light is coupled into the cladding due to the imperfection of the coupling process.
  • the cladding mode, and some of the light directly leaks out of the fiber at the coupling of the fiber; wherein the light directly leaking out of the fiber is absorbed by the light-coupled liquid substance and the surrounding opaque substance
  • the heat is collected, naturally dissipated by the surrounding material according to the power level, or carried out by the flowing light-coupled liquid material; and the light coupled into the cladding is stripped by the cladding mode leakage device respectively disposed on the two optical fibers. Drop it.
  • the fiber optic connector provided by the technical solution can be used as a permanent fiber optic connector or as an active fiber optic connector.
  • the optical fibers 1 and 2 which are welded together by the two ends are composed.
  • the liquid substance 8 is located in the container 7, and the fiber coating layer on the adjacent sides of the two splices of the optical fibers 1 and 2 is peeled off and the cladding is exposed, and the optical fiber fusion joint and the bare portion are immersed in the liquid substance 8;
  • the refractive index of the liquid substance is greater than or equal to the refractive index of the fiber cladding, usually the liquid substance is glycerin or polyglycerin; the liquid substance may be static or flowing.
  • a plurality of fulcrums can be provided in the container 7 to securely fix the optical fibers in the liquid substance.
  • the working principle of the energy transmission fiber is as follows: because the two welded fibers are incomplete due to the fusion connection, a part of the light is coupled into the cladding, part of the light, except for the working light coupled into the core. Directly leaking the fiber at the joint; whether it is direct leakage or cladding mode, it is leaked into the liquid substance and absorbed by the liquid substance and the surrounding opaque substance to become heat; depending on the amount of leakage power, the heat is either Peripheral substances are naturally emitted or carried out by flowing liquid substances.
  • the energy transmission fiber connector proposed by the invention can greatly reduce the implementation price of the fiber connector.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

一种光纤连接器，由两根传能光纤（1，2）、光纤对准装置（3）、光耦合液态物质（3）及两个光纤包层模泄漏装置（4，5）组成，两个传能光纤（1，2）靠近光纤端部的一段区域的涂覆层被剥离掉并露出包层；光纤对准装置（3）将两根光纤（1，2）的端部对齐并靠在一起；光耦合液态物质（3）静止或流动地覆盖对准的两根光纤（1，2）的端部区域；两个光纤包层模泄漏装置（4，5）分别位于光纤对准装置（3）两边光纤（1，2）的裸露区域，并包裹在光纤上。

Description

传能光纤连接器 技术领域
本发明涉及光纤连接器，特别是大功率传能光纤连接器，可广泛应用于大功率激光传输系统中。
背景技术
在大功率激光系统中，通常需要用光纤将激光器发出的光传输到工作点，在光纤的传输过程中不可避免地会遇到光纤的连接问题。在大功率传能光纤连接中，要处理好两个问题，一个是要高效率地将输入光纤的光耦合到输出光纤中，再一个是要将在光耦合过程中耦合到输入和输出光纤包层中的光在接头附近区域内泄漏出去，以避免该光烧毁光纤涂覆层进而毁坏光纤。目前，传能光纤的连接通常采用瑞典OPTOSKAND公司的技术方案，即用二个具有包层模泄漏功能的光纤头，通过光学系统进行光纤连接。但是，这种方式进行光学连接，价格昂贵。
本发明的目的是提供新型传能光纤连接器，可以大幅降低大功率传能光纤连接器的价格。
发明内容
本发明的一种传能光纤连接器的技术方案概括如下：
一种传能光纤连接器，由两根传能光纤、光纤对准装置、光耦合液态物质及两个光纤包层模泄漏装置组成，其中：两根传能光纤靠近光纤端部的一段区域的涂覆层被剥离掉并露出包层；光纤对准装置将两根光纤的端部对齐并靠在一起；光耦合液态物质静止或流动地覆盖对准的两根光纤的端部区域；两个光纤包层模泄漏装置分别位于光纤对准装置两边光纤的裸露区域，并包裹在光纤上。
所述光耦合液态物质是甘油或水。
所述包层模泄漏装置由相间包裹在光纤包层上的透明和不透明物体及设置在它们外部的散热装置组成，其中透明物质的折射率大于等于光纤包层的折射率。
所述透明物质是胶或胶和玻璃的粘接体。
所述包层模泄漏装置为一个装有液态物质的容器，所述光纤的裸纤部分浸入液态物质中，液态物质折射率大于等于光纤包层的折射率，液态物质是静止状态或流动状态。
所述液态物质是甘油或聚甘油。
本发明的另一种传能光纤连接器的技术方案概括如下：
一种传能光纤连接器，由两根端部熔接在一起的光纤、容器和液态物质组成，其特征是：液态物质静止或流动地设置在容器中；两根熔接在一起的光纤接头两边的临近区域上的光纤涂覆层被剥离并裸露出包层，该光纤熔接头及裸露部分浸在液态物质中，液态物质的折射率大于等于光纤包层的折射率。
所述液态物质是甘油或聚甘油。
本发明的效果在于：可以大幅降低传能光纤连接器的价格。
附图说明
图1为本发明提出的传能光纤连接器的第一个技术方案的结构示意图。
图2为本发明提出的传能光纤连接器的第一个技术方案中包层模泄漏装置的第一种结构示意图。
图3为本发明提出的传能光纤连接器的第一个技术方案中包层模泄漏装置的第二种结构示意图。
图4为本发明提出的传能光纤连接器的第二个技术方案的结构示意图。
其中：1、2表示光纤，11、21表示光纤的芯，12、22表示光纤的包层，13、23表示光纤的涂覆层；3表示光纤对准装置；4、5表示包层模泄漏装置，41、43、45表示包覆在裸光纤上的不透明物质，42、44表示包覆在裸光纤上的透明物质，4S表示散热器，4Y表示液态物质；6表示光耦合液态物质；7表示容器；8表示液态物质。
具体实施方式
下面结合附图和实施例详细说明本发明提出的传能光纤连接器。
图1为本发明提出的传能光纤连接器的第一个技术方案的结构示意图。传能光纤连接器由两根传能光纤1和2、光纤对准装置3、光耦合液态物质6及两个光纤包层模泄漏装置4和5组成。其中：两个传能光纤1和2靠近光纤端部的一段区域的涂覆层被剥离掉并露出包层；光纤对准装置3将两根光纤1和2的端部对齐并靠在一起；光耦合液态物质6静止或流动地覆盖对准的两根光纤1和2的端部区域；两个光纤包层模泄漏装置4和5分别位于光纤对准装置3两边光纤1和光纤2的裸露区域，并包裹在光纤上。
在该技术方案中，光耦合液态物质通常为水或甘油。
在该技术方案中，对准装置可以采用V型槽结构来实现光纤的对准。也可以采用通信中常用的精密金属或陶瓷插针来实现光纤的对准。
在该技术方案中，包层模泄漏装置可采用图2所示结构。在该实现方案中，包层模泄漏装置由相间包裹在光纤包层上的透明和不透明物体及设置在它们外部的散热装置组成，其中透明物质的折射率大于等于光纤包层的折射率。在图中，41、43、45为包覆在裸光纤包层12上的不透明物质，42、44为包覆在裸光纤包层12上的透明物质，透明物质的折射率大于等于光纤包层的折射率。在这些透明和不透明物质外设有散热器4S。
在该包层模泄漏装置中，相间包裹在光纤包层上的透明和不透明物质并不仅限于图中所示的数量，可以根据不同的需要设置。不透明物质通常使高导热金属，如铜，透明物质通常为胶和高折射率玻璃。散热器4S可以根据泄漏功率大小采用自然散热或水冷散热。该包层模泄漏装置的工作原理是：包层模在透明物质包覆区域泄漏出光纤，被透明区周边的不透明物质吸收变为热量，然后由散热器将热量散发掉。
在该技术方案中，包层模泄漏装置还可采用图3所示结构。在该实现方案中，包层模泄漏装置由一个容器4R、装在4R中的液态物质4Y及裸纤部分浸入液态物质中的光纤1组成。其中，液态物质4Y折射率大于等于光纤包层的折射率，液态物质可以是静止的，也可以是流动的。
在该包层模泄漏装置中，容器4R中根据需要可设置多个光纤固定点，以使裸光纤被液态物质包覆，液态物质通常是甘油或聚甘油等折射率大于石英光纤折射率的物质。其工作原理为：包层模在液态物质中泄漏出光纤并被液态物质及周边不透明物质吸收变为热量，当泄漏功率较小时，热量可以通过容器散发掉；当泄漏功率较大时，热量可以通过流动的液态物质带走。
在该技术方案中，传能光纤的工作原理为：一根光纤中的光通过光耦合液态物质耦合进另一根光纤，由于耦合过程的不完善，会有部分光耦合到包层中，形成包层模，还有部分光直接从光纤耦合处泄漏出光纤；其中，直接泄漏出光纤的光由光耦合液态物质和周边不透明物质吸 收变为热，根据功率大小由周边物质自然散发掉，或由流动的光耦合液态物质带出；而耦合到包层中的光，由分别设置在两根光纤上的包层模泄漏装置剥离掉。
该技术方案提供的光纤连接器，既可以作为永久性光纤连接器，也可以作为活动光纤连接器。
图4为本发明提出的传能光纤连接器的第二个技术方案的结构示意图。在这里，由两根端部熔接在一起的光纤1和2、容器7和液态物质8组成。其中：液态物质8位于容器7中，两根熔接在一起的光纤1和2接头两边的临近区域上的光纤涂覆层被剥离并裸露出包层，该光纤熔接头及裸露部分浸在液态物质8中；液态物质的折射率大于等于光纤包层的折射率，通常该液态物质为甘油或聚甘油；液态物质可以是静止的，也可以是流动的。在容器7中可以设置多个支点，将光纤可靠的固定在液态物质中。
在该技术方案中，传能光纤的工作原理为：两根熔接在一起的光纤由于熔接连接的不完善，除了耦合到纤芯中的工作光外，一部分光被耦合到包层中，一部分光直接在接头处泄漏出光纤；无论是直接泄漏光还是包层模，都被泄漏到液态物质中，并被液态物质和周边的不透明物质吸收变为热；根据泄漏功率的大小，这些热量或者由周边物质自然散发掉，或者由流动的液态物质带出。
本发明提出的传能光纤连接器，可以大幅降低光纤连接器的实现价格。

Claims (8)

  1. 一种传能光纤连接器，由两根传能光纤、光纤对准装置、光耦合液态物质及两个光纤包层模泄漏装置组成，其特征是：两根传能光纤靠近光纤端部的一段区域的涂覆层被剥离掉并露出包层；光纤对准装置将两根光纤的端部对齐并靠在一起；光耦合液态物质静止或流动地覆盖对准的两根光纤的端部区域；两个光纤包层模泄漏装置分别位于光纤对准装置两边光纤的裸露区域，并包裹在光纤上。
  2. 根据权利要求1所述的传能光纤连接器，其特征是：所述光耦合液态物质是甘油或水。
  3. 根据权利要求1所述的传能光纤连接器，其特征是：所述包层模泄漏装置由相间包裹在光纤包层上的透明和不透明物体及设置在它们外部的散热装置组成，其中透明物质的折射率大于等于光纤包层的折射率。
  4. 根据权利要求3所述的传能光纤连接器，其特征是：所述透明物质是胶或胶和玻璃的粘接体。
  5. 根据权利要求1所述的传能光纤连接器，其特征是：所述包层模泄漏装置为一个装有液态物质的容器，所述光纤的裸纤部分浸入液态物质中，液态物质折射率大于等于光纤包层的折射率，液态物质是静止状态或流动状态。
  6. 根据权利要求5所述的传能光纤连接器，其特征是：所述液态物质是甘油或聚甘油。
  7. 一种传能光纤连接器，由两根端部熔接在一起的光纤、容器和液态物质组成，其特征是：液态物质静止或流动地设置在容器中；两根熔接在一起的光纤接头两边的临近区域上的光纤涂覆层被剥离并裸露出包层，该光纤接头及裸露部分浸在液态物质中，液态物质的折射率大于等于光纤包层的折射率。
  8. 根据权利要求7所述的传能光纤连接器，其特征是：所述液态物质是甘油或聚甘油。
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