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    • 6. 发明授权
    • Polarization maintaining optical fiber coupler and method of manufacturing same
    • 保持光纤耦合器的极化及其制造方法
    • US07203397B2
    • 2007-04-10
    • US10637537
    • 2003-08-11
    • Yasuhiro OuchiDaiichiro Tanaka
    • Yasuhiro OuchiDaiichiro Tanaka
    • G02B6/26G02B6/42G02B6/02C03B37/023
    • G02B6/2835G02B6/2843G02B2006/2839
    • There is provided a polarization maintaining optical fiber coupler and a method of manufacturing this polarization maintaining optical fiber coupler in which manufacturing is simplified and excess loss is reduced. A polarization maintaining optical fiber coupler is provided in which, in at least one of the polarization maintaining optical fibers forming the fused and extended portion, the ratio of the [diameter of the core/the diameter of the cladding] or [the distance between the two stress applying portions/the diameter of the cladding] is greater than the ration of the [diameter of the core/the diameter of the cladding] or [the distance between the two stress applying portions/the diameter of the cladding in the portions of the polarization maintaining optical fibers that do not form the fused and extended portion]. In addition, in this polarization maintaining optical fiber coupler, in the fused and extended portion, the stress applying portions are enveloped by the cladding. Moreover, polarization maintaining optical fibers are used in which the distance between adjacent outer circumferences of the two stress applying portions is 20 μm or more.
    • 提供了一种偏振维持光纤耦合器和制造这种偏振保持光纤耦合器的方法,其中制造简化并且过多的损耗减小。 提供一种偏振保持光纤耦合器,其中在形成熔融和延伸部分的至少一个偏振保持光纤中,[芯的直径/包层的直径]或[ 两个应力施加部分/包层的直径]大于[芯的直径/包层的直径]或[两个应力施加部分之间的距离/包层部分的直径 不形成熔融和延伸部分的偏振保持光纤]。 此外,在这种偏振保持光纤耦合器中,在熔融和延伸部分中,应力施加部分被包层包围。 此外,使用偏振维持光纤,其中两个应力施加部分的相邻外周之间的距离为20μm或更大。