Variable coupler fiberoptic sensor

Details Variable coupler fiberoptic sensor Variable coupler fiberoptic sensor

1984-10-17

1987-01-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231R, 73705, H01J 516, H01J 4014

Patent

active

046348581

ABSTRACT:
A variable coupler fiberoptic sensor in which a fused, tapered, biconical directional fiberoptic coupler is encapsulated in a stress birefringent medium whose index of refraction changes with applied stress.
The ratio of power in the output fibers of the directional coupler varies with the change of index of refraction of the encapsulating medium as stress is applied to the medium.

REFERENCES:
patent: 4360247 (1982-11-01), Beasley
patent: 4368645 (1983-01-01), Glenn et al.
patent: 4482890 (1984-11-01), Forbes et al.
patent: 4495819 (1985-01-01), Tekippe
patent: 4545253 (1985-10-01), Avicola

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