An electrical-filtered optical heterodyne technique for tuning speed measurement of DBR lasers  

作　　者：JiangWei Man NingHua Zhu HongGuang Zhang Ke Sun JianHong Ke Wei Han Wei Chen Yu Liu Xin Wang HaiQing Yuan et al. 

机构地区：[1]Chinese Acad Sci, State Key Lab Integrated Optoelect, Inst Semicond, Beijing 100083, Peoples R China

出　　处：《Chinese Science Bulletin》2011年第7期704-708,共5页

基　　金：supported by the National Natural Science Foundation of China (60536010, 60606019, 60777029, and 60820106004);the National Basic Research Program of China(2006CB604902, 2006CB302806,2006dfa11880, and 2009AA03Z409);the Meteorology Industry Research Project of China (GYHY200806033)

摘　　要：A new scheme based on the electrical-filtered optical heterodyne technique is proposed for measuring the tuning speed of tunable distributed Bragg reflector (DBR) lasers. In this scheme, a 10 GHz high-pass electrical filter is used and the wavelength switching time of a tunable DBR laser for different tuning frequencies corresponding exactly to different delay lines is measured. The switching time is measured to be nearly 300 ns and can be improved by reducing the equivalent resistance-capacitance (RC) time constant of the device. The distribution of the beat signal of the DBR laser in the time domain is also obtained, and is a good match with the waveforms measured using an optical filter.A new scheme based on the electrical-filtered optical heterodyne technique is proposed for measuring the tuning speed of tunable distributed Bragg reflector （DBR） lasers. In this scheme, a 10 GHz high-pass electrical filter is used and the wavelength switching time of a tunable DBR laser for different tuning frequencies corresponding exactly to different delay lines is measured. The switching time is measured to be nearly 300 ns and can be improved by reducing the equivalent resistance-capacitance （RC） time constant of the device. The distribution of the beat signal of the DBR laser in the time domain is also obtained, and is a good match with the waveforms measured using an optical filter.

关 键 词：DBR激光器 半导体激光器 光外差技术 光学滤波器 测量技术 可调谐 速度 过滤 

分 类 号：TN248.4[电子电信—物理电子学] TN929.11