公开(公告)号：US5313266A

公开(公告)日：1994-05-17

申请号：US931228

申请日：1992-08-17

申请人： Robert M. Keolian ,  Steven L. Garrett ,  Charles B. Cameron

发明人： Robert M. Keolian ,  Steven L. Garrett ,  Charles B. Cameron

IPC分类号： G01B9/02 ,  G01H9/00

CPC分类号： G01H9/004 ,  G01D5/35329

摘要： A highly sensitive optical fiber interferometer sensor comprising a laser light source, a [2.times.2] optical fiber coupler to split the beam in two, a differential transducer which converts a signal of interest into optical phase shift in the laser light transmitted through the two optical fibers in the interferometer and a [3.times.3] optical fiber complex which recombines the two beams, producing interference which can be electronically detected. The use of the [3.times.3] coupler permits Passive Homodyne demodulation of the phase-modulated signals provided by the interferometer without feedback control or modulation of the laser itself and without requiring the use of electronics within the interferometer.

摘要翻译： 一种高灵敏度的光纤干涉仪传感器，包括激光光源，将光束分成两部分的[2x2]光纤耦合器，将感兴趣的信号转换成透过两根光纤的激光的光学相移的差分换能器 在干涉仪和复合两个光束的[3x3]光纤复合体中，产生可被电子检测的干扰。 使用[3x3]耦合器允许由干涉仪提供的相位调制信号的被动量子解调，而不需要激光器本身的反馈控制或调制，而不需要使用干涉仪内的电子元件。