| 摘要 |
An optical fiber rotation sensor includes an optical fiber coil and a laser for providing a source of coherent light. A beam splitter divides the light source into a first beam and a second beam. The first beam is coupled into a first end of the coil, so that the first beam propagates through the coil from the first end to a second end of the coil. A reflector, such as a mirror or a phase conjugate reflector, reflects the second beam back toward the beam splitter. A scalar phase conjugate reflector reflects the first beam at the second end of the coil so that the reflected first beam propagates back through the coil to the first end and is recombined with the reflected second beam in the beam splitter. A detector measures the phase difference between the reflected first beam component and the reflected second beam component in the recombined beam.
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