Tunable multiple-quantum-well distributed-Bragg-reflector lasers as tunable narrowband receivers

6 July 1989

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 25 (14) , 890-892
https://doi.org/10.1049/el:19890597

Abstract

We report a tunable receiver based on a MQW-DBR laser biased just below threshold. The device simultaneously integrates the functions of a tunable filter, optical amplifier, photodetectorand, if desired, an FSK discriminator. Using identical devices for both a transmitter and a receiver, we demonstrate FSK transmission up to 250 Mbit/s with sensitivities in the ˜- 30dBm range for 10⁻⁹ BER. Speed is limited by the transmitter FM response, and independentspeed measurements indicate a detection bandwidth of at least 1.7 GHz.

Keywords

TUNABLE RECEIVER
DISTRIBUTED-BRAGG-REFLECTOR LASERS
BER
PHOTODETECTOR
FSK DISCRIMINATION
IDENTICAL RECEIVER TRANSMITTER DEVICES
TUNABLE NARROWBAND RECEIVERS
MULTIPLE-QUANTUM-WELL
TRANSMITTER FM RESPONSE
BIASED JUST BELOW THRESHOLD
1.7 GHZ
OPTICAL AMPLIFIER
250 MBIT/S
DETECTION BANDWIDTH
TUNABLE FILTER
MQW-DBR LASER
FSK TRANSMISSION
SENSITIVITIES

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