Sub-sea fiber optic cable location apparatus with a plurality of

Details Sub-sea fiber optic cable location apparatus with a plurality of Sub-sea fiber optic cable location apparatus with a plurality of

1989-01-13

1990-09-11

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 731, 455601, 350 9629, H01J 516, G02B 602, G01N 2100

Patent

active

049565508

ABSTRACT:
A sub-sea fiber-optic cable location indication apparatus wherein a small portion of a light signal carried by a main optical fiber cable is tapped off and is used to trigger or control a parameter of an electromagnetic, or acoustic signal radiated by a transponder carried by the main cable.

REFERENCES:
patent: 3906223 (1975-09-01), White
patent: 3936631 (1976-02-01), Muska
patent: 4217598 (1980-08-01), d'Auria et al.
patent: 4252402 (1981-02-01), Puech et al.
patent: 4339658 (1982-07-01), Fromm et al.
patent: 4708476 (1987-11-01), So et al.
patent: 4820916 (1989-04-01), Patriquin
patent: 4840482 (1989-06-01), Shigematsu et al.

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