Laser secure communications system

Details Laser secure communications system Laser secure communications system

1969-06-04

1980-06-24

Buczinski, S. C.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

330 43, 331 945C, 331 945M, H04B 900, H01S 300

Patent

active

042096898

ABSTRACT:
A laser secure communications system is disclosed. The system utilizes a long laser cavity, the end reflecting members of which may be located many kilometers apart. One or more high gain laser amplifiers optically aligned within the long laser cavity provide the optical carrier energy. Laser oscillation only occurs if the remotely located end reflectors are optically aligned and if the laser gain is sufficient to overcome the round trip transmission loss. The optical carrier thus established is modulated and detected at either end of the laser cavity.

REFERENCES:
patent: 3215842 (1965-11-01), Thomas
patent: 3395608 (1968-08-01), Neill

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