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    Polarizing and polarization maintaining leakage channel fibers
    3.
    发明授权
    Polarizing and polarization maintaining leakage channel fibers 有权

    公开(公告)号：US10036850B2

    公开(公告)日：2018-07-31

    申请号：US15146693

    申请日：2016-05-04

    Applicant: IMRA America, Inc.

    Inventor： Shigeru Suzuki ,  Hugh A. McKay ,  Martin E. Fermann

    IPC: G02B6/024 ,  G02B6/02 ,  G02B6/036

    CPC classification number: G02B6/024 ,  G02B6/02009 ,  G02B6/02042 ,  G02B6/02314 ,  G02B6/02319 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/03694

    Abstract: 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.

    WIDE BANDWIDTH, LOW LOSS PHOTONIC BANDGAP FIBERS
    5.
    发明申请
    WIDE BANDWIDTH, LOW LOSS PHOTONIC BANDGAP FIBERS 审中-公开

    公开(公告)号：US20130294736A1

    公开(公告)日：2013-11-07

    申请号：US13915404

    申请日：2013-06-11

    Applicant: IMRA America, Inc.

    Inventor： Liang Dong ,  Brian K. Thomas ,  Shigeru Suzuki ,  Libin Fu

    IPC: G02B6/032 ,  G02B6/024

    CPC classification number: G02B6/032 ,  B29D11/00663 ,  G02B6/02328 ,  G02B6/02347 ,  G02B6/024

    Abstract: Various embodiments include photonic bandgap fibers (PBGF). Some PBGF embodiments have a hollow core (HC) and may have a square lattice (SQL). In various embodiments, SQL PBGF can have a cladding region including 2-10 layers of air-holes. In various embodiments, an HC SQL PBGF can be configured to provide a relative wavelength transmission window Δλ/λc larger than about 0.35 and a minimum transmission loss in a range from about 70 dB/km to about 0.1 dB/km. In some embodiments, the HC SQL PBGF can be a polarization maintaining fiber. Methods of fabricating PBGF are also disclosed along with some examples of fabricated fibers. Various applications of PBGF are also described.

    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS
    6.
    发明申请
    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS 审中-公开
    极化和极化维护泄漏通道纤维

    公开(公告)号：US20160245989A1

    公开(公告)日：2016-08-25

    申请号：US15146693

    申请日：2016-05-04

    Applicant: IMRA America, Inc.

    Inventor： Shigeru Suzuki ,  Hugh A. McKay ,  Martin E. Fermann

    IPC: G02B6/024 ,  G02B6/036 ,  G02B6/02

    CPC classification number: G02B6/024 ,  G02B6/02009 ,  G02B6/02042 ,  G02B6/02314 ,  G02B6/02319 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/03694

    Abstract: 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.

    Abstract translation: 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。

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