Title:
光ファイバコイルの焼なましに使用するホルダ
Document Type and Number:
Japanese Patent JPH09510684
Kind Code:
A
Abstract:
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.
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Inventors:
オンストット、ジェームス・アール
クロンク、ブライオン・ジェイ
ハッチンソン、テッド・エフ
マクダウガル、トレーバー・ダブリュ
ルッツ、デール・アール
クロンク、ブライオン・ジェイ
ハッチンソン、テッド・エフ
マクダウガル、トレーバー・ダブリュ
ルッツ、デール・アール
Application Number:
JP52290095A
Publication Date:
October 28, 1997
Filing Date:
January 31, 1995
Export Citation:
Assignee:
ミネソタ・マイニング・アンド・マニュファクチュアリング・カンパニー
International Classes:
G01R15/24; C03B37/15; G02B6/00; G02B6/02; G02B6/255; G02B6/36; (IPC1-7): C03B37/15; G01R15/24; G02B6/00; G02B6/02
Attorney, Agent or Firm:
青山 葆 （外１名）