Secure communication alarm system

Details Secure communication alarm system Secure communication alarm system

1989-12-27

1995-10-03

Gregory, Bernarr E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359118, 359126, 359164, 359173, 359183, 359188, 359195, H04B 1002

Patent

active

054556988

ABSTRACT:
A secure fiber optic communication that is based on physical properties of light propagating through a Sagnac interferometer in combination with optical power alarms. These alarms are then used to alert users to intrusion and to shut down communications to avoid compromising data.

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patent: 4217488 (1980-08-01), Hubbard
patent: 4435850 (1984-03-01), Bowen et al.
patent: 4501021 (1985-02-01), Weiss
patent: 4837856 (1989-06-01), Glista, Jr.
patent: 4903339 (1990-02-01), Solomon
patent: 4965856 (1990-10-01), Swanic

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