Title :
Duplex transmitter configuration for bit-error-free optical FDM cross-connect system
Author :
Tada, Yasuhiko ; Shibata, Nori ; Ishida, Osamu ; Nosu, Kiyoshi ; Ishii, Hiroyuki
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
Abstract :
A cross-connect bit rate of 156 Mb/s was achieved without loss of a bit by the duplex transmitter using two DBR lasers and an optical LiNbO/sub 3/ switch with a switching speed of 4 GHz. The bit-error-free operation was experimentally verified by observing eye patterns. The proposed optical cross-connect scheme supports cross-connect bit rates up to 2 Gb/s if a 4-Gb/s switching device is employed. Only widely tunable lasers are needed to construct the optical cross-connect system utilizing the duplex transmitter, and the stringent requirements of frequency switching speed for lasers can be eliminated.<>
Keywords :
distributed Bragg reflector lasers; frequency division multiplexing; multiplexing equipment; optical communication equipment; optical switches; semiconductor lasers; transmitters; 156 Mbit/s; 2 Gbit/s; 4 Gbit/s; DBR lasers; bit-error-free optical FDM cross-connect system; cross-connect bit rate; duplex transmitter; eye patterns; optical LiNbO/sub 3/ switch; widely tunable lasers; Bit rate; Distributed Bragg reflectors; Frequency; High speed optical techniques; Laser tuning; Optical filters; Optical network units; Optical packet switching; Optical transmitters; Optical tuning;
Journal_Title :
Photonics Technology Letters, IEEE
