Title :
High performance 1.5 mu m multiple-quantum-well DFB-DC-PBH-LDs at 30 mW output power for Gb/s range coherent systems
Author :
Kitamura, M. ; Yamazaki, H. ; Sasaki, T. ; Kida, N. ; Mito, I.
Author_Institution :
NEC Corp., Kawasaki, Japan
fDate :
4/1/1991 12:00:00 AM
Abstract :
Long cavity (1200 mu m) MQW-DFB-DC-PBH-LDs have been developed. The devices simultaneously showed less than 1 MHz spectral linewidth, lower than 15 kHz FM dip frequency, moderate FM efficiency (250-300 MHz/mA at 100 MHz modulation frequency), as well as 10-GHz FM bandwidth (6 dB down level from the peak), at 30 mW output power condition. Such LDs will be suitable for Gb/s continuous phase frequency shift keying (CPFSK) current optical fiber communication systems.<>
Keywords :
distributed feedback lasers; optical communication equipment; semiconductor junction lasers; 1.5 micron; 10 GHz; 1200 micron; 30 mW; FM bandwidth; FM dip frequency; Gb/s range coherent systems; MQW DFB DC PBH LD; continuous phase frequency shift keying; high performance; laser diode; long cavity; moderate FM efficiency; optical fiber communication systems; output power; spectral linewidth; Distributed feedback devices; Fiber lasers; Frequency modulation; Frequency shift keying; Optical fibers; Optical receivers; Power generation; Power lasers; Quantum well devices; Scanning electron microscopy;
Journal_Title :
Photonics Technology Letters, IEEE
