High-Speed Mode-Locked Quantum-Dot Lasers and Optical Amplifiers
High-Speed Mode-Locked Quantum-Dot Lasers and Optical Amplifiers
复制标题
DOI：
10.1109/jproc.2007.900949
复制
发表时间：
2007-11
影响因子：
20.6
通讯作者：
M. Kuntz;G. Fiol;M. Laemmlin;C. Meuer;D. Bimberg
中科院分区：
文献类型：
--
作者：
M. Kuntz;G. Fiol;M. Laemmlin;C. Meuer;D. Bimberg
回顾了工作波长以 1290 nm 为中心的 GaAs 基高速锁模量子点 (QD) 激光器和光放大器的最新成果，并根据集成光纤 QD 器件模块获得的实验数据讨论了它们对器件和工作参数的复杂依赖性。据报道，QD 激光器的混合和无源锁模具有 5 至 80 GHz 之间的重复频率、亚 ps 脉冲宽度、低至 190 fs 的超低定时抖动、超过 1 W 的高输出峰值功率以及 Q 开关抑制，显示了此类器件在 O 波段光纤应用中的巨大潜力。给出了 QD 半导体光放大器 (SOA) 的连续波和动态特性结果。 QD 放大器表现出接近理想的 4 dB 噪声系数，并同时展示了三个粗波分复用 (CWDM) 波长的多波长放大。 QD 偏振相关性建模表明，使用垂直耦合 QD 堆栈应该可以实现偏振不敏感的 SOA。超快 80 GHz 光梳的放大和采用 QD SOA 的 40 Gb/s 无误码数据信号放大显示了它们在未来 100 Gb 以太网中的应用潜力。
Recent results on GaAs-based high-speed mode-locked quantum-dot (QD) lasers and optical amplifiers with an operation wavelength centered at 1290 nm are reviewed and their complex dependence on device and operating parameters is discussed on the basis of experimental data obtained with integrated fiber-based QD device modules. Hybrid and passive mode locking of QD lasers with repetition frequencies between 5 and 80 GHz, sub-ps pulse widths, ultralow timing jitter down to 190 fs, high output peak power beyond 1 W, and suppression of Q-switching are reported, showing the large potential of this class of devices for O-band optical fiber applications. Results on cw and dynamical characterization of QD semiconductor optical amplifiers (SOAs) are presented. QD amplifiers exhibit a close-to-ideal noise figure of 4 dB and demonstrate multiwavelength amplification of three coarse wavelength division multiplexing (CWDM) wavelengths simultaneously. Modelling of QD polarization dependence shows that it should be possible to achieve polarization insensitive SOAs using vertically coupled QD stacks. Amplification of ultrafast 80 GHz optical combs and bit-error-free data signal amplification at 40 Gb/s with QD SOAs show the potential for their application in future 100 Gb Ethernet networks.