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    • 7. 发明授权
    • Holder for annealing fiber optic coils
    • 光纤线圈退火支架
    • US5570449A
    • 1996-10-29
    • US407188
    • 1995-03-21
    • Ted F. HutchinsonDale R. LutzTrevor W. MacDougallJames R. Onstott
    • Ted F. HutchinsonDale R. LutzTrevor W. MacDougallJames R. Onstott
    • G01R15/24C03B37/15G02B6/00G02B6/02G02B6/255G02B6/36
    • G02B6/2551C03B37/15G02B6/3628G02B6/3636G02B6/3684
    • A holder for annealing a fiber optic coil uses a silica ring on a silica substrate, or silica tubular coil, either of which may be directly incorporated into a coil subassembly for a Faraday-effect current sensor. The ring may be formed in a silica plate by sandblasting or grinding, or formed separately and adhered to the plate. In the tubular holder embodiment, silica tubes and sleeves are used to protect fusion splices between the ends of the fiber coil and polarizing fibers. Use of silica for most of the subassembly components matches the coefficients of thermal expansion of the subassembly to that of the fiber coil, and also allows the coil to be annealed at extremely high temperatures. Annealing yields fiber coils of lowered birefringence, particularly when used with spun fibers. Ferrules are used to adjust the angular orientation of the fibers with respect to their planes of polarization.
    • 用于退火光纤线圈的保持器使用二氧化硅衬底上的二氧化硅环或二氧化硅管状线圈,其中任一个可以直接并入用于法拉第效应电流传感器的线圈子组件中。 环可以通过喷砂或研磨在二氧化硅板中形成,或者单独形成并粘附到板上。 在管状保持器实施例中,使用石英管和套管来保护纤维线圈的端部和偏振纤维之间的熔接。 大多数子组件部件使用二氧化硅将子组件的热膨胀系数与纤维线圈的热膨胀系数相匹配,并且还允许线圈在极高温度下退火。 退火产生具有降低的双折射的纤维线圈,特别是当与纺丝纤维一起使用时。 套圈用于调整纤维相对于它们的极化平面的角取向。