Fiber optic sensor array

Details Fiber optic sensor array Fiber optic sensor array

1990-04-16

1991-04-30

Sikes, William L.

350 9616, G02B 602, G02B 616

Patent

active

050112627

ABSTRACT:
A fiber optic array for detecting and communicating the state of a plurality of spatically remote variables includes a plurality of switchable optical couplers. The couplers are located between fiber optic sense coils that cause responsive phase shifts in optical pulses launched through the array. The couplers are controlled by the parallel outputs of shift registers so that a coupler is only "on" for the period of time required to couple out a portion of the optical energy of a pulse after passage through the adjacent sense coil and is thereafter shut "off" to minimize crosstalk between the sensors and to optimize the output optical power.

REFERENCES:
patent: 4859019 (1989-08-01), Beran
patent: 4900115 (1990-02-01), Heuring et al.
patent: 4923267 (1990-05-01), Su
patent: 4934777 (1990-06-01), Jou et al.

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