Performance analysis of an all-fiber resonant-ring interferometric sensor
Abstract
An all-fiber resonant-ring interferometer is proposed for use as a sensor. A performance analysis has been made to show how the output characteristics depend on the coupling condition in an evanescent-field directional coupler that forms a fiber ring and on some fiber parameters as well as on the temporal coherence of a light source. These parameters play a critical role in characterizing the output performance. If a light source with a coherence factor larger than 0.95 is provided, the resonant-ring interferometer would be available as a practical sensor. The minimum detectable phase change in the fiber ring is predicted to be less than 5 x 10 to the -8th rad, as a typical example.
- Publication:
-
Applied Optics
- Pub Date:
- December 1985
- DOI:
- 10.1364/AO.24.004199
- Bibcode:
- 1985ApOpt..24.4199O
- Keywords:
-
- Fiber Optics;
- Interferometers;
- Optical Measuring Instruments;
- Optical Polarization;
- Performance Tests;
- Shot Noise;
- Light Beams;
- Sensors;
- Spectral Line Width;
- Instrumentation and Photography;
- FIBER OPTICS;
- SENSORS;
- INTERFEROMETERS;
- FIBERS: APPLICATION