Wavelength agile optical receiver

Details Wavelength agile optical receiver Wavelength agile optical receiver

1987-01-20

1988-12-20

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

370 3, H04B 900

Patent

active

047929995

ABSTRACT:
A wavelength agile optical receiver can be used in an optical equivalent of an "order wire" data communication system. The receiver includes an acousto-optic grating which can be tuned to deflect optical signals received at a particular wavelength by changing a drive signal produced by an acoustic transducer. A multi-wavelength optical signal is applied to the grating. Under "order wire" or quiescent conditions, light at an order wire wavelength is deflected onto a split optical detector. A processor is employed to select control signals for a voltage-controlled oscillator which drives the acoustic transducer. The processor can cause the transducer output to be changed to provide deflection of optical energy at a selectable wavelength onto the detector.

REFERENCES:
patent: 3431504 (1969-03-01), Adler
patent: 3971930 (1976-07-01), Fitzmaurice et al.
patent: 4039249 (1977-08-01), Kaminow et al.
patent: 4172663 (1979-10-01), Byer et al.
patent: 4222011 (1980-09-01), Kurnit
patent: 4571024 (1986-02-01), Husbands
patent: 4671603 (1987-06-01), McQuoid et al.

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