High speed and wide temperature range uncooled 1.3-μm ridge waveguide DFB lasers  

作　　者：王定理 周宁 张瑞康 黄晓东 李林松 张军 江山 石兢 

机构地区：[1]Department of Physics and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education,Wuhan University [2]Accelink Technologies Co.,Ltd.,Wuhan Research Institute of Post & Telecommunications [3]State Key Laboratory for New Optical Communication Technologies and Networks

出　　处：《Chinese Optics Letters》2009年第9期809-811,共3页中国光学快报（英文版）

摘　　要：A 1.3-μm wavelength vertical-mesa ridge waveguide mulitple-quantum-well （MQW） distributed feedback （DFB） laser with high directly modulated bandwidth and wide operation temperature range is reported. With the optimization of the strained-layer MQWs in the active region, the surrounding graded-index separated-confinement-heterostructure waveguide layers, together with the optimization of the detuning and coupling coefficient of the DFB grating, high directly modulation bandwidth of 16 GHz at room temperature and wide working temperature range from -40 to 85 ℃ are obtained. The mean time to failure （MTTF） is estimated to be over 2×10^6 h. The device is suitable as light source of high-bit-rate optical transmitters with small size and reduced cost.A 1.3-μm wavelength vertical-mesa ridge waveguide mulitple-quantum-well （MQW） distributed feedback （DFB） laser with high directly modulated bandwidth and wide operation temperature range is reported. With the optimization of the strained-layer MQWs in the active region, the surrounding graded-index separated-confinement-heterostructure waveguide layers, together with the optimization of the detuning and coupling coefficient of the DFB grating, high directly modulation bandwidth of 16 GHz at room temperature and wide working temperature range from -40 to 85 ℃ are obtained. The mean time to failure （MTTF） is estimated to be over 2×10^6 h. The device is suitable as light source of high-bit-rate optical transmitters with small size and reduced cost.

关 键 词：LIGHT Light sources Semiconductor quantum wells 

分 类 号：TN248[电子电信—物理电子学] TN752