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High-speed performance of partly gain-coupled 1.55- mu m strained-layer multiple-quantum-well DFB lasers

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3 Author(s)
H. Lu ; Bell Northern Res., Ottawa, Ont., Canada ; G. P. Li ; T. Makino

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.<>

Published in:

IEEE Photonics Technology Letters  (Volume:5 ,  Issue: 8 )