Title :
Multi-electrode, tunable, narrow linewidth BH DFB lasers for use in high-bit-rate coherent systems
Author :
Nesset, D. ; Creaner, M.J. ; Wickes, H.J. ; Sturgess, I.C.C. ; Hale, W.B. ; Sully, P.C.
Author_Institution :
British Telecom Res. Lab., Ipswich, UK
Abstract :
A multi-electrode, distributed feedback laser with a tuning range over 1 nm has been demonstrated. A linewidth below 3 MHz over the full tuning range and a minimum linewidth of 2.1 MHz was achieved. An FM response, flat to within 3 dB from 100 kHz to 7 GHz with a modulation efficiency of 450 MHz/mA was obtained. A 2.5 Gbit/s CPFSK experiment performed using this device as the transmitter, resulted in in a receiver sensitivity of -41 dBm at 10-9 BER for a PRBS of 2 23-1
Keywords :
distributed feedback lasers; frequency shift keying; laser frequency stability; laser tuning; optical communication equipment; optical modulation; semiconductor junction lasers; CPFSK; FM response; MOVPE; design principles; high-bit-rate coherent systems; minimum linewidth; modulation efficiency; multielectrode tunable DFB lasers; narrow linewidth BH DFB lasers;
Conference_Titel :
Sources for Coherent Optical Communication, IEE Colloquium on
Conference_Location :
London
