Tunable narrowband receiver utilizing distributed Bragg reflecto

Details Tunable narrowband receiver utilizing distributed Bragg reflecto Tunable narrowband receiver utilizing distributed Bragg reflecto

1989-02-08

1991-05-28

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455611, 455619, 372 96, G02F 200, H01S 300, H04B 1000

Patent

active

050201530

ABSTRACT:
A lightwave communication system is disclosed in which an integrated receiver is realized as a distributed Bragg reflector (MQW-DBR) laser structure biased at or below threshold. The receiver functions simultaneously as a tunable filter, optical amplifier, photodetector, and, if desired, as an FSK discriminator. It is also disclosed that the lightwave receiver also is capable of half duplex operation as a lightwave transmitter using the same DBR laser structure. The disclosed receiver eliminates complex coupling of the many different element realized by the integrated, multifunction structure.

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