Title :
A new approach to an optical attenuator for a time compression multiplex system using a laser diode as both transmitter and receiver
Author_Institution :
NTT Corp., Kanagawa, Japan
fDate :
8/1/1991 12:00:00 AM
Abstract :
A novel method of constructing an optical attenuator for a time compression multiplex system with a laser transceiver is proposed and investigated. The main purpose is to achieve wide dynamic range in a receiver. The transceiver consists of a laser diode backed by a photodiode. At average power levels, the laser diode is the main photodetector. At higher than average levels, the laser diode acts as an optical attenuator for the photodiode. The laser diode is called the laser attenuator (LATT). Basic properties of the proposed LATT, such as wavelength and polarization dependence, are clarified. The LATT is confirmed to have an optical dynamic range of over 37 dB
Keywords :
multiplexing equipment; optical communication equipment; photodetectors; photodiodes; semiconductor junction lasers; transceivers; average power levels; laser attenuator; laser diode; laser transceiver; optical attenuator; optical dynamic range; photodetector; polarization dependence; receiver; time compression multiplex system; transmitter; wavelength dependence; Costs; Diode lasers; Dynamic range; Optical attenuators; Optical fiber polarization; Optical receivers; Optical sensors; Optical transmitters; Photodiodes; Telephony;
Journal_Title :
Lightwave Technology, Journal of
