Full Field Analysis Of Modal Domain Sensor Signals For Structural Control
- 16 January 1989
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 0986, 85-89
- https://doi.org/10.1117/12.948891
Abstract
The use of a photodetector array to process the full far-field output of a modal domain fiber optic sensor is reported. The array is linked to a laboratory computer, which reduces the data in real time and measures the transfer of power between the two lobes of the far-field output of a dual-moded fiber. The power transfer is generated by imparting a longitudinal strain to the fiber. The ratio of powers in the two lobes can be used to determine the magnitude of strain.Keywords
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