Semiconductor optical heterodyne detector

Details Semiconductor optical heterodyne detector Semiconductor optical heterodyne detector

1987-12-28

1990-02-20

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

357 16, 357 17, 455612, H04B 900

Patent

active

049033417

ABSTRACT:
There is provided by this invention an optical heterodyning device comprised of a semiconductor heterostructure having a forward biased electrode connected thereto for optically mixing an input signal frequency with a local oscillating frequency in the separate confined laser cavity and a reverse biase electrode connected thereto for detecting the intermediate frequency produced. The local oscillator provides preamplification in the laser cavity and can be effectively phase locked to the input signal frequency.

REFERENCES:
patent: 4156209 (1979-05-01), Herbst
patent: 4327962 (1982-05-01), Redman
patent: 4329664 (1982-05-01), Javan
patent: 4405230 (1983-09-01), Tew
patent: 4468773 (1984-08-01), Seaton
patent: 4503541 (1985-03-01), Weller

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