Dual channel optical homodyne receiver

Details Dual channel optical homodyne receiver Dual channel optical homodyne receiver

1976-07-19

1977-12-13

Murray, Richard

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

H04B 900

Patent

active

040630846

ABSTRACT:
An improved homodyne receiver for use in wideband optical communications systems is disclosed. The receiver utilizes quadrature demodulation of the optical signal in the manner of a two-phase receiver. A beam-splitting/phase-splitting optical assembly is used to channelize the received and the local oscillator beams to a pair of optical detectors. Squaring amplifiers in the quadrature channels followed by a summing network provide an output signal which is proportional to the square of the modulation of the input signal. This receiver is especially well-suited to the reception of Pulse Code Modulated optical signals.

REFERENCES:
patent: 3666956 (1972-05-01), von Willisen
patent: 3939341 (1976-02-01), Graves
patent: 3971930 (1976-07-01), Fitzmaurice et al.

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