Fiber optic transducer

Details Fiber optic transducer Fiber optic transducer

1981-07-27

1983-12-20

Corbin, John K.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250227, 250231P, G02B 514, G01D 534

Patent

active

044213840

ABSTRACT:
A fiber optic transducer is provided by cutting and polishing the ends of two optical fibers, having equal indexes of refraction, at angles with respect to their axis such that all light signals propagating within the optical fibers are incident to the end face at angles that are greater than the critical angle defined for an interface between a medium with an index of refraction equal to the index of refraction equal to that of an intervening medium between the two fibers. The two end faces so cut are positioned to be in a parallel relationship, a distance apart that is less than the wavelength of the light propagating within the input fibers. Variations of this distance with the pressure changes caused by the acoustic environment produces variations in the optical signal energy coupled from the input optical fiber to the output optical fiber, thus creating an amplitude modulated light beam that propagates in the output optical fiber.

REFERENCES:
patent: 3166673 (1965-01-01), Vickery et al.
patent: 3500240 (1970-03-01), Kessler
patent: 3775699 (1973-11-01), Cassels
patent: 4053764 (1977-10-01), Sierak

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