CN108508536A - 一种全光纤偏振光分束器 - Google Patents

一种全光纤偏振光分束器 Download PDF

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Publication number
CN108508536A
CN108508536A CN201810319563.5A CN201810319563A CN108508536A CN 108508536 A CN108508536 A CN 108508536A CN 201810319563 A CN201810319563 A CN 201810319563A CN 108508536 A CN108508536 A CN 108508536A
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China
Prior art keywords
fibre
core
beam splitter
optical fiber
polarization beam
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CN201810319563.5A
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不公告发明人
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Wuhan Sino Cree Optoelectronics Technology Co Ltd
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Wuhan Sino Cree Optoelectronics Technology Co Ltd
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Priority to CN201810319563.5A priority Critical patent/CN108508536A/zh
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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
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2726—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide
    • G02B6/274—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide based on light guide birefringence, e.g. due to coupling between light guides
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02042—Multicore optical fibres
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02066—Gratings having a surface relief structure, e.g. repetitive variation in diameter of core or cladding
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2773—Polarisation splitting or combining

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

本发明涉及一种全光纤偏振光分束器。其中，该全光纤偏振光分束器包括：一根输入光纤、双芯光纤、两根输出光纤。一根输入光纤是单芯非保偏光纤，两根输出光纤均是单芯保偏光纤，双芯光纤的纤芯上刻有闪耀光栅（倾斜光栅）。本发明能够实现全光纤结构偏振光分束，提高偏振光分束器的集成度，降低传输损耗，提高消光比。

Description

一种全光纤偏振光分束器
技术领域
本发明涉及一种偏振光分束器，尤其涉及一种全光纤偏振光分束器。
背景技术
偏振光分束器是相干光通信、全光开关、激光器以及光纤陀螺等光系统中的重要元件。传统偏振光分束器，均含有分束镜，因此无法做成全光纤结构，影响光系统的小型化及集成化。
早在1990年，PENG等人已对双椭圆芯光纤的偏振特性进行分析，并模拟出每根纤芯均有高于26dB的偏振消光比。1995年首个光子晶体光纤样品的偏振特性被报道以来，国内外对于基于微结构光纤的偏振分束器研究逐渐增多。
然而，以上基于双椭圆芯光纤或光子晶体光纤的偏振光分束器，都只在理论上进行模拟分析，距离实际样品仍有很长的路要走。例如，拉制光纤时如何精准控制双椭圆芯光纤的椭圆形状、如何制作大小不一的光子晶体光纤的空气孔等因素，都导致其尚未有任何成品面世。
因此，不仅理论上提高偏振光分束器的集成度、实现高消光比的全光纤偏振光分束，更要易于生产加工制造，才更具有现实意义。
发明内容
本发明提供了一种全光纤偏振光分束器，基于本发明能够实现全光纤结构偏振光分束，提高偏振光分束器的集成度，降低传输损耗，提高消光比。
本发明公开的全光纤偏振光分束器，包括：一根输入光纤、双芯光纤、两根输出光纤。其中，所述一根输入光纤是单芯非保偏光纤，且纤芯与双芯光纤的其中一根纤芯对准；所述双芯光纤，其纤芯刻有闪耀光栅，且所述闪耀光栅的成栅面与纤芯平面垂直，并与光纤轴向成一定角度；所述纤芯平面是由双芯光纤的两根纤芯的中轴线所构成的平面；所述两根输出光纤，均是单芯保偏光纤，且两根输出光纤的纤芯分别与双芯光纤的两根纤芯对准。
本发明公开的全光纤偏振光分束器，采用刻有闪耀光栅的双芯光纤，可使任意偏振态的光分为o光和e光，且o光和e光分别在两根纤芯中传输。由于本发明的全光纤偏振光分束器，基于现有双芯光纤技术及光纤闪耀光栅技术，无需复杂的双椭圆芯光纤工艺，也无需结构复杂、大小不一的光子晶体光纤空气孔，因此，本发明的全光纤偏振光分束器兼具全光纤器件的小型化集成化的优势和易于加工的特性，且更有望实现产品化。
附图说明
图1为本发明全光纤偏振光分束器实施例的结构示意图；
图2为本发明全光纤偏振光分束器实施例中，双芯光纤端面的结构示意图。

Claims (7)

1.一种全光纤偏振光分束器，其特征在于，包括：一根输入光纤、双芯光纤、两根输出光纤。
2. 根据权利要求 1 所述的全光纤偏振光分束器，其特征在于：所述一根输入光纤是单芯非保偏光纤，且纤芯与双芯光纤的其中一根纤芯对准。
3.根据权利要求 1 所述的全光纤偏振光分束器，其特征在于：所述双芯光纤，其纤芯刻有闪耀光栅。
4.根据权利要求 3 所述的全光纤偏振光分束器，其特征在于：所述闪耀光栅，其成栅面与纤芯平面垂直。
5.根据权利要求 3 所述的全光纤偏振光分束器，其特征在于：所述闪耀光栅，其成栅面与光纤轴向成一定角度。
6.根据权利要求 1 所述的全光纤偏振光分束器，其特征在于：所述两根输出光纤，均是单芯保偏光纤。
7.根据权利要求 1 所述的全光纤偏振光分束器，其特征在于：所述两根输出光纤的纤芯分别与双芯光纤的两根纤芯对准。
CN201810319563.5A 2018-04-11 2018-04-11 一种全光纤偏振光分束器 Pending CN108508536A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109283696A (zh) * 2018-09-25 2019-01-29 深圳华中科技大学研究院 一种基于45°倾斜光纤光栅的偏振分束器件

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039437A1 (en) * 1998-02-13 2003-02-27 Apa Optics, Inc. Multiplexer and demultiplexer for single mode optical fiber communication links
CN1407752A (zh) * 2001-09-06 2003-04-02 朗迅科技公司 多光栅光学波导监视器
CN101162295A (zh) * 2006-10-12 2008-04-16 朱开成 基于余(正)弦场振幅型调制器和菲涅尔变换系统组合的保模结构分束器
CN101281340A (zh) * 2008-05-28 2008-10-08 电子科技大学 全光模数转换器namsx并行量化编码方法
CN101336385A (zh) * 2005-12-06 2008-12-31 传感网络有限公司 利用适用于高温的光纤的传感系统
CN101556356A (zh) * 2009-04-17 2009-10-14 北京大学 一种光栅耦合器及其在偏振和波长分束上的应用
US20170045687A1 (en) * 2014-04-24 2017-02-16 National Institute Of Information And Communications Technology Multicore/multimode fiber coupling device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039437A1 (en) * 1998-02-13 2003-02-27 Apa Optics, Inc. Multiplexer and demultiplexer for single mode optical fiber communication links
CN1407752A (zh) * 2001-09-06 2003-04-02 朗迅科技公司 多光栅光学波导监视器
CN101336385A (zh) * 2005-12-06 2008-12-31 传感网络有限公司 利用适用于高温的光纤的传感系统
CN101162295A (zh) * 2006-10-12 2008-04-16 朱开成 基于余(正)弦场振幅型调制器和菲涅尔变换系统组合的保模结构分束器
CN101281340A (zh) * 2008-05-28 2008-10-08 电子科技大学 全光模数转换器namsx并行量化编码方法
CN101556356A (zh) * 2009-04-17 2009-10-14 北京大学 一种光栅耦合器及其在偏振和波长分束上的应用
US20170045687A1 (en) * 2014-04-24 2017-02-16 National Institute Of Information And Communications Technology Multicore/multimode fiber coupling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109283696A (zh) * 2018-09-25 2019-01-29 深圳华中科技大学研究院 一种基于45°倾斜光纤光栅的偏振分束器件

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