基于注入锁定法布里-珀罗激光器全光判决的研究  

Research of all-optical decision based on injection locked Fabry-Perot semiconductor laser

作　　者：薛纪强 于晋龙[1] 王文睿[1] 王菊[1] 王子雄[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

出　　处：《光电子．激光》2016年第1期6-11,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金青年基金(61205061);教育部博士点基金(20120032120029)资助项目

摘　　要：研究了基于双波长注入锁定法布里-珀罗半导体激光器(FP-LD)的全光判决门,及其在失真的10Gbit/s归零(RZ)伪随机序列(PRBS)全光判决中的应用。首先对双波长注入锁定FP-LD的输出光功率与注入光功率的功率转移特性进行了实验研究,测试得到"S"型的功率转移曲线,证明了双波长注入锁定结构具有对注入信号光进行光判决的能力;合理设置注入FP-LD信号光的偏振态,及其与最接近的FP-LD自由振荡纵模之间的频率失谐量,实现了10Gbit/s RZ光信号的全光判决,并将判决后的结果通过光示波器进行观测。与注入的失真RZ信号的眼图比较,全光判决后零码噪声得到抑制,眼图明显张开,从而验证了基于双波长注入锁定FP-LD的全光判决方案判决高速光信号的可行性以及其在全光信号处理领域极大的应用价值。All-optical decision gate based on two-mode injection locked Fabry-Perot laser diode（FP-LD）and its application in decision on a distorted 10Gbit/s return-to-zero（RZ）pseudorandom bit sequence（PRBS）are studied in this paper.Firstly,the transfer characteristics of the injection and the output power in two-mode injection locked FP-LD are experimentally studied.The＂S-shape＂transfer characteristic curve of test result shows that the structure of two-mode injection locked FP-LD has the ability for alloptical decision on injection optical data signal.Furthermore,all-optical decision on a 10Gbit/s RZ optical PRBS is realized by properly adjusting the polarization state of the injection data signal and the detuning between the injection data light and the closest free running longitudinal mode of FP laser.The result of decision is observed through optical oscilloscope.Compared with the eye diagram of the distorted injection RZ data,the noise added to zero code is suppressed,and the eye diagram after decision is obviously opened.So the feasibility of all-optical decision on high speed optical signal by using two-mode injection locked FP-LD is verified,which shows a vast application prospect to the field of all-optical signal processing.

关 键 词：法布里-珀罗半导体激光器(FD-LD) 注入锁定 全光判决 伪随机序列(PRBS) 眼图 

分 类 号：TN929.11[电子电信—通信与信息系统]