Title :
Delayed self-multiplex light source for frequency-agile transmitters
Author :
Ishida, Osamu ; Kuwano, Shigeru ; Shibata, Nori ; Ishii, Hiroyuki
Author_Institution :
NTT Opt. Network Syst Labs., Kanagawa, Japan
fDate :
12/1/1995 12:00:00 AM
Abstract :
The delayed self-multiplex (DSM) light sources proposed in this paper provide multiple frequency-agile outputs from a single tunable laser. The DSM light source employs multiple fiber delay lines and optical switches, and overcomes the intrinsic tuning-speed limitation and thermal frequency drift of the tunable laser. Practical switching performance restricted by the optical switch is analyzed and examined in a delayed self-duplex (DSD) light source constructed with a tunable DBR laser and a LiNbO3 electrooptic switch. Bit-error-free operation of the frequency-agile transmitter is achieved in 622 Mb/s transmission; the power penalty due to the DSD light source is 1.8 dB
Keywords :
distributed Bragg reflector lasers; electro-optical switches; integrated optics; laser tuning; light sources; lithium compounds; multiplexing; optical delay lines; optical transmitters; semiconductor lasers; 622 Mbit/s; DSD light source; LiNbO3; LiNbO3 electrooptic switch; bit-error-free operation; delayed self-multiplex light source; frequency-agile transmitter; frequency-agile transmitters; intrinsic tuning-speed limitation; multiple fiber delay lines; multiple frequency-agile outputs; optical switches; power penalty; single tunable laser; switching performance; thermal frequency drift; tunable DBR laser; tunable laser; Delay lines; Distributed Bragg reflectors; Fiber lasers; Frequency; Laser tuning; Lasers and electrooptics; Light sources; Optical switches; Performance analysis; Tunable circuits and devices;
Journal_Title :
Lightwave Technology, Journal of
