基于低速光调相信号注入DFB-LD产生4～16倍频的40GHz和60GHz毫米波信号  

Generation of 40 GHz and 60 GHz Millimeter Wave Signals by Injecting Low-Frequency Phase-Modulated Optical Signal into a DFB-LD with the Frequency-Multiplication Factor Ranging from 4 to 16

作　　者：吴波[1] 于晋龙[1] 刘毅[1] 王文睿[1] 郭精忠[1] 罗俊[1] 王菊[1] 杨恩泽[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《中国激光》2011年第11期150-156,共7页Chinese Journal of Lasers

基　　金：国家973计划(2010CB327603);国家自然科学基金重点项目(60736035)资助课题

摘　　要：提出一种基于低速光调相信号注入半导体分布反馈激光器(DFB-LD)产生最低4倍频,最高16倍频的40GHz和60GHz的毫米波调相信号。该方案利用注入光的N阶调相边带锁定DFB-LD的波长,同时DFB-LD放大此调相边带并与原注入光信号通过相干差拍作用在LD腔内形成毫米波调相信号。通过理论建模分析了工作原理,经系统实验验证了此方案的可行性。应用2.5,5和10GHz的光调相信号均得到40GHz或60GHz的毫米波信号,实现了最低4倍频,最高16倍频的毫米波信号产生,并通过单边带相位噪声的测量验证了毫米波的频率稳定度。A 40 GHz or 60 GHz millimeter wave phase-modulated signal is generated from a low-frequency phasemodulated optical signal injected into a distributed feedback laser diode （DFB-LD） and the frequency-multiplication factor varies from 4 to 16. The N-th modulation sideband of injection light results in wavelength locking of DFB-LD, simultaneously, the N-th modulation sideband is also amplified in the DFB-LD. Therefore, these two coherent optical fields interact in LD cavity to form stable millimeter wave phase-modulated signal. Via theoretical analyses and experimental demonstrations, the 40 GHz and 60 GHz millimeter wave phase-modulated signals are obtained by injecting 2.5, 5 and 10 GHz sine phases-modulated signal into the DFB-LD. The frequency-multiplication factor varies from 4 to 16 and the stability of the generated millimeter wave is established and proved by single sideband phase noise measurement.

关 键 词：光通信 光载无线 光子上变频 注入锁定 

分 类 号：TN929.11[电子电信—通信与信息系统]