Title :
High-speed performance of partly gain-coupled 1.55- mu m strained-layer multiple-quantum-well DFB lasers
Author :
Lu, H. ; Li, G.P. ; Makino, T.
Author_Institution :
Bell Northern Res., Ottawa, Ont., Canada
Abstract :
A partly-gain-coupled 1.55- mu m distributed feedback (DFB) laser with a strained-layer multiple-quantum-well (MQW) active region with high relaxation oscillation frequency and maximum intrinsic bandwidth of 28 GHz is reported. An effective differential gain of 1.80*10/sup -15/ cm/sup 2/ was achieved, which may be attributed to the strain effect in the MQW active region as well as the combination of the longitudinal gain/index coupling mechanism and fast lateral carrier injection from the cladding layers into the wells.<>
Keywords :
distributed feedback lasers; high-speed optical techniques; optical workshop techniques; semiconductor lasers; 1.55 micron; 28 GHz; cladding layers; gain-coupled laser; high-speed performance; intrinsic bandwidth; lateral carrier injection; longitudinal gain/index coupling mechanism; relaxation oscillation frequency; strained-layer multiple-quantum-well DFB lasers; Bandwidth; Capacitive sensors; Damping; Distributed feedback devices; Laser feedback; Laser modes; Laser theory; Optical coupling; Quantum well devices; Quantum well lasers;
Journal_Title :
Photonics Technology Letters, IEEE
