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    • 61. 发明申请
    • POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS
    • 极化和极化维护泄漏通道纤维
    • US20160245989A1
    • 2016-08-25
    • US15146693
    • 2016-05-04
    • IMRA America, Inc.
    • Shigeru SuzukiHugh A. McKayMartin E. Fermann
    • G02B6/024G02B6/036G02B6/02
    • G02B6/024G02B6/02009G02B6/02042G02B6/02314G02B6/02319G02B6/02342G02B6/02357G02B6/03694
    • This disclosure relates to polarizing optical fibers and polarization maintaining optical fibers, including active and/or passive implementations. An embodiment includes a polarizing (PZ) optical fiber that includes stress applying parts (SAPs) disposed in a first cladding region, the SAPs comprising a material with a thermal expansion coefficient, αSAP. A core region is at least partially surrounded by cladding features and the SAPs. The core includes glass with a thermal expansion coefficient, αcore. The arrangement of the SAPs satisfies: Rsc=dSAP/Dsc, where Dsc is the SAP center to core center distance, and dSAP is the average SAP diameter, and dα=|αSAP−αcore|, and where Rsc and dα may be sufficiently large to induce stress birefringence into the core and to provide for polarized output. Active fibers in which a portion of the fiber is doped may be implemented for application in fiber lasers, fiber amplifiers, and/or optical pulse compressors.
    • 本公开涉及偏振光纤和偏振维持光纤,包括有源和/或无源实现。 一个实施例包括偏振(PZ)光纤,其包括设置在第一包层区域中的应力施加部分(SAP),SAP包括具有热膨胀系数的材料αSAP。 核心区域至少部分地被包层特征和SAP包围。 核心包括具有热膨胀系数αcore的玻璃。 SAP的排列满足:Rsc = dSAP / Dsc,其中Dsc是SAP中心到核心中心距离,dSAP是平均SAP直径,dα= |αSAP-αcore|,其中Rsc和dα可能足够大 以引起应力双折射到芯中并提供偏振输出。 一部分光纤被掺杂的有源光纤可以实现用于光纤激光器,光纤放大器和/或光脉冲压缩机中。
    • 65. 发明申请
    • OPTICAL FIBER
    • 光纤
    • US20140064684A1
    • 2014-03-06
    • US13745248
    • 2013-01-18
    • Sumitomo Electric Industries, LTD.
    • Eisuke Sasaoka
    • G02B6/02
    • G02B6/02G02B6/02342G02B6/03633G02B6/03694
    • The present invention relates to an optical fiber having a structure to enable both prevention of resin coating combustion due to leaked light, and low-loss light transmission. The optical fiber comprises a core region, and a cladding region. The cladding region is constituted by an optical cladding which affects the transmission characteristics of light propagating in the core region, and a physical cladding which does not affect the transmission characteristics of light propagating in the core region. Particularly, a leakage reduction portion is provided in the physical cladding so as to surround an outer periphery of the core region through the optical cladding. The leakage reduction portion functions to suppress propagation of the leaked light propagating from the core region toward outside the cladding region.
    • 本发明涉及具有能够防止由于漏光引起的树脂涂层燃烧和低损耗光透射的结构的光纤。 光纤包括芯区域和包层区域。 包层区域由影响在芯区域中传播的光的透射特性的光学包层以及不影响在芯区域中传播的光的透射特性的物理包层构成。 特别地,在物理包层中设置泄漏减少部分,以便通过光学包层围绕芯区域的外围。 泄漏减少部用于抑制从芯区域向包层区域外侧传播的泄漏光的传播。