高速光探测器频率响应的精确表征  

Accurate Characterization for the Frequency Response of High-Speed Photodetectors

作　　者：温继敏[1] 伞海生[1] 黄亨沛[1] 谢亮[1] 祝宁华[1] 赵玲娟[1] 王圩[1] 

机构地区：[1]中国科学院半导体研究所集成光电子学国家重点实验室,北京100083

出　　处：《Journal of Semiconductors》2006年第9期1630-1634,共5页半导体学报（英文版）

摘　　要：提出一种新的基于分布布拉格反射可调激光器的光外差频率响应测试系统,并给出了准确有效的校准方法来消除输出光功率和拍频线宽的波动等引起的误差,从而可以精确表征高速光探测器的频率响应特性.通过对标准高速光探测器的测试和校准,得到的结果与制造商提供的数据表相当符合,证明了该测试方法的准确性和有效性.文中也研究了系统中可能会影响频响特性测量的其他因素,如光源的边模抑制比、波长调谐速度等.A novel optical heterodyne system with a distributed Bragg reflector （DBR） tunable laser is proposed,and an efficient calibration method is also put forward for removing errors caused by the fluctuations of optical power and the linewidth of the beat signal. Accurate frequency response of high-speed photodetectors can be obtained with this method. Results calibrated by our method agree well with data provided by the manufacturer, thereby demonstrating the accuracy and effectiveness of this method. Side-mode suppression ratios and dynamic behavior of wavelength transients, which probably affect the measurement of frequency response, are also investigated.

关 键 词：DBR可调激光器 光外差技术 频率响应 高速光探测器 

分 类 号：TN25[电子电信—物理电子学]