发明名称 |
Polarization-maintaining fiber system and method of manufacturing the same |
摘要 |
In an optical fiber system comprising first and second polarization-maintaining fibers, a first orthogonal coordinate system of the first polarization-maintaining fiber is azimuthally rotated relative to a second orthogonal coordinate system of the second polarization-maintaining fiber by the use of an optical coupler by a preselected angle between 0 DEG and 90 DEG , both exclusive. Preferably, the optical coupler is shorter than a beat length of each fiber and the preselected angle is equal to 45 DEG . The optical fiber system is applicable to an optical sensor for sensing a variable physical parameter. In the sensor, a light beam is incident onto one end of the first polarization-maintaining fiber so that a plane of polarization of the light beam is matched to one of those planes of the first polarization-maintaining fiber which are determined by the first orthogonal coordinate system. A third polarization-maintaining fiber is coupled through an additional optical coupler to the second polarization-maintaining fiber. The optical fiber system can be manufactured either by twisting and locally fusing a single polarization-maintaining fiber or by splicing together two polariation-maintaining fibers.
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申请公布号 |
US4603941(A) |
申请公布日期 |
1986.08.05 |
申请号 |
US19830535656 |
申请日期 |
1983.09.26 |
申请人 |
AGENCY OF INDUSTRIAL SCIENCE AND TECHNOLOGY;HOYA CORPORATION |
发明人 |
FUJII, YOSHIMASA;MITSUHASHI, YOSHINOBU;KOIKE, OSAMU |
分类号 |
G01D5/34;G01J9/02;(IPC1-7):G02B6/26 |
主分类号 |
G01D5/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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