光调制技术测量半导体激光器固有高频响应  

Extraction of Intrinsic Response of Semiconductor Lasers Using Improved Optical Modulation Technique

作　　者：陈诚[1] 祝宁华[1] 袁海庆[1] 

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

出　　处：《光学学报》2005年第7期913-917,共5页Acta Optica Sinica

基　　金：国家863计划(2001AA312030;2001AA312290);国家973计划(G2000036601);国家杰出青年基金(69825109)资助课题

摘　　要：采用一种新的全光纤连接的半导体激光器光调制技术,实现了对高速半导体激光器固有响应的直接测量。利用速率方程能够对光调制的动态响应过程进行准确的描述。基于对抽运源和探测器的频率响应对光调制数据准确性影响的分析,通过将网络分析仪校正到同轴端,然后用直接扣除法和相互扣除法,在网络分析仪外部对测量数据进行了修正。两种修正方法得到了一致的结果,并且同已有的理论和实验结果相符合。改进后的光调制技术和两种修正数据的方法不但提高了数据的精确性,而且扩展了测量的频率范围。An improved all-fiber-connected optical modulation setup has been established for the direct measurement of the intrinsic frequency response of semiconductor lasers. The analytical expression of the dynamic response of high-speed semiconductor lasers has been deduced from the rate equations. The measurements have been made with a calibrated vector network analyzer (VNA), and the effects of the pump laser and photodetector have been removed from the measured data using direct-subtracting method and mutual-subtracting method. The accurate intrinsic frequency response of semiconductor lasers can therefore be obtained. The experiment shows that the results obtained using these two methods agree well as expected. It is not only an improvement of extracted data, but also an extension to the range of measurable frequency.

关 键 词：光通信技术 高速半导体激光器 光调制技术 固有高频响应 抽运源 探测器 数据修正 

分 类 号：TN248.4[电子电信—物理电子学]