Phase-conjugate communication using mutually incoherent laser be

Details Phase-conjugate communication using mutually incoherent laser be Phase-conjugate communication using mutually incoherent laser be

1989-02-10

1990-09-04

Laroche, Eugene R.

Multiplex communications

Wide area network

Packet switching

350 361, 350 36, 370 1, 370 4, 455601, 455609, 455617, G07B 523, H04B 100, G02F 160

Patent

active

049539540

ABSTRACT:
A phase-conjugate optical communication system includes a first source of coherent radiation for producing a first beam having a nominal wavelength .lambda. and a first modulator for temporally modulating the first beam. A second source of coherent radiation, mutually incoherent with the first source, produces a second beam having the nominal wavelength .lambda., while a second modulator temporally modulates the second beam. A mutually pumped phase conjugator is positioned such that the first and second beams fan in the conjugator and produce a set of shared fanning holograms, the holograms causing a third beam, which is the phase conjugate of the first beam and on which is imposed the temporal modulation of the second beam, to be diffracted in a direction opposite to the first beam and causing a fourth beam, which is the phase conjugate of the second beam and on which is imposed the temporal modulation of the first beam, to be diffracted in a direction opposite to the second beam.

REFERENCES:
patent: 4573767 (1986-03-01), Jewell
patent: 4720176 (1988-01-01), Klein et al.
patent: 4739496 (1988-04-01), Marom et al.

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