Method and apparatus for optical communication by frequency modu

Details Method and apparatus for optical communication by frequency modu Method and apparatus for optical communication by frequency modu

1986-09-26

1988-12-13

Masinick, Michael A.

Multiplex communications

Wide area network

Packet switching

455617, 455619, H04B 9100

Patent

active

047916303

ABSTRACT:
Laser optical communication according to this invention is carried out by producing multi-frequency laser beams having different frequencies, splitting one or more of these constituent beams into reference and signal beams, encoding information on the signal beams by frequency modulation and detecting the encoded information by heterodyne techniques. Much more information can be transmitted over optical paths according to the present invention than with the use of only one path as done previously.

REFERENCES:
patent: 4635246 (1987-01-01), Taylor et al.
Faure-Progress Towards Heterodyne-IEEE Jour. Quantum Electronics, vol. QE-17, #6, Jun. 1981, pp. 897-905.

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