Optical sensing apparatus and method

Details Optical sensing apparatus and method Optical sensing apparatus and method

1980-02-01

1982-08-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73705, 350 39, G02B 514

Patent

active

043429076

ABSTRACT:
A sensor for measuring stress, temperature, pressure, sound, etc. comprising an optical waveguide, preferably an optical fiber waveguide, a light source which injects light into one end of the waveguide, a deformer contacting and deforming the waveguide to cause light to couple from originally excited modes to other modes, and an optical detector to detect the change in light coupling caused by deformation of the waveguide.

REFERENCES:
patent: 3056297 (1962-10-01), Duke
patent: 3625589 (1971-12-01), Snitzer
patent: 3786681 (1974-01-01), Kiehn
patent: 3931518 (1976-01-01), Miller
patent: 3950987 (1976-04-01), Slezinger et al.
patent: 4019051 (1977-04-01), Miller
patent: 4071753 (1978-01-01), Fulenwider et al.

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