Ultrafast switching characteristics of 1.55-um polarization bistable devices

随着光通信速度和功耗的不断提高，全光信号处理已成为人们关注的焦点。本研究的目的是测量偏振双稳垂直腔面发射激光器中偏振开关的超快暂态响应，阐明偏振双稳的机理，并设计适合高速工作的垂直腔面发射激光器的结构。因此，我对VCSEL的结构进行了改进，以实现高速、低功耗的工作。研究了超快开关测量系统和基于垂直腔面发射激光器的光通信应用系统。

The increasing speed and power consumption in optical telecommunications has focused attention on all-optical signal processing. The aims of this study are the measurement of the ultrafast transient response of the polarization switching in the polarization bistable VCSEL, the clarification of the mechanism of the polarization bistability, and the designing the structure of the VCSEL which aimed in the high speed operation. So, I improved the VCSEL structure for the high speed and the low-power consumption operation. I also investigated the measurement system of the ultrafast switching and the applied system for the optical communication using the VCSEL.