基于注入半导体激光器的微波副载波相位调制信号产生  

Generation of microwave subcarrier phase modulation signal based on optical injection into a semiconductor laser

作　　者：吴波[1] 于晋龙[1] 王文睿[1] 韩丙辰[2] 郭精忠[1] 罗俊[1] 王菊[1] 张晓媛[1] 刘毅[1] 杨恩泽[1] 

机构地区：[1]天津大学电子信息工程学院光纤通信实验室,天津300072 [2]山西大同大学物理与电子科学学院,大同037009

出　　处：《物理学报》2012年第5期194-202,共9页Acta Physica Sinica

基　　金：国家自然科学基金重点项目(批准号:60736035);国家自然科学基金(批准号:60977053);国家重点基础研究发展计划(973项目)(批准号:2010CB327603)资助的课题~~

摘　　要：光载无线技术是解决终端超宽带无线通信的重要方法,光信号与微波/毫米波信号的融合处理技术在光-无线的数据格式转换中至关重要.提出了一种基于相位调制信号光注入Fabry-Perot型半导体激光器实现微波副载波相位调制信号产生的方法.光学注入半导体激光器的输出光场会产生一周期(P1)振荡效应,P1振荡产生的边带实现了相位调制信号光的调制分量的放大,被放大的调制分量与注入光载波在激光器腔内拍频形成微波副载波.注入光相位的变化导致新产生的微波副载波相位变化,实现了注入信号光相位信息转化为微波副载波相位信息.本系统完成1.3 Gb/s,2.7 Gb/s,2 Gb/s光相位调制信号到微波副载波相位调制信号的转换,并测量了微波的单边带相位噪声.通过光电转换和电域混频将还原出的光基带信号与原信号进行逻辑对比,证明了数据信息转换的正确性.Radio-over-fiber technology has become an important solution for ultra wide band wireless communication, and the convergence of signal processing between optics and microwave/millimeter wave is more crucial. In this paper, microwave subcarrier phase modu- lation signal generation based on optical injection into a semiconductor Fabry-Perot laser is proposed. According to the period-one（P 1） oscillation effect of laser output optical field, one modulation component of the optical phase modulation signal is amplified by side- band of P1 oscillation. The amplified component beats with injection optical carder to generate microwave subcarrier. The phase shifts lead to the phase shift of subcarrier, thus the phase information is converted into phase information about microwave subcarrier. The optical phase-shift-keying signals at 1.3 Gb/s, 2.7 Gb/s, 2 Gb/s are converted into microwave subcarrier phase modulation signal, and the single sideband phase noise is measured. By logically comparing the demodulated signal with original signal, the feasibility of data information conversion is proved experimentally.

关 键 词：光载无线 注入锁定 一周期振荡 副载波相位调制信号 

分 类 号：TN248.4[电子电信—物理电子学]