Method and apparatus for a Fabry-Perot multiple beam fringe sens

Details Method and apparatus for a Fabry-Perot multiple beam fringe sens Method and apparatus for a Fabry-Perot multiple beam fringe sens

1979-01-22

1982-05-11

Church, Craig E.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356361, 356357, G01B 1102

Patent

active

043290582

ABSTRACT:
A method and the resulting apparatus for implementing a unique multiple beam fringe sensor that is adapted to be interfaced with a low cost, compact fiber optic transmission system in order to provide an accurate digital representation of a physical parameter (e.g. temperature) of a remote sample. The sensor is fabricated so as to include a Fabry-Perot gap formed between the ends of two mated optical fibers. By examining the optical characteristics of light that is transmitted through the Fabry-Perot sensor gap, an indication of gap width can be ascertained. Accordingly, a change in Fabry-Perot sensor gap width is related to a change in the particular physical parameter to be measured.

REFERENCES:
patent: 4171915 (1979-10-01), Hesselink

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