摘要
提出了一种基于低速信号注入法布里-珀罗型激光二极管(FP-LD)的无本振全光混频技术,利用FP-LD的一个纵模和外部注入信号光的四波混频作用生成的边带锁定纵模产生光载射频信号。通过改变FP-LD的注入光信号强度和偏振态实现副载波频率可变,并根据FP-LD注入锁定特性分析实验结果得到的不同边模抑制比。实验中采用2.7,2.5,1.25 Gb/s非归零(NRZ)码注入FP-LD实现副载波频率分别为16.2,10.0,18.2和20.0 GHz的全光混频,测量16.2 GHz的副载波得到了10 kHz偏移处单边带相位噪声为-81.2,-87.7 dBc/Hz。
a novel local oscillator(LO)-free frequency mixing based on FP-LD injection is proposed.The sideband of four wave mixing(FWM) between external injection light and one longitudinal mode of FP-LD generates sideband locking longitudinal mode which then produces the radio-frequency(RF) signal.By adjusting the intensity and polarization of injection signal,different mixing frequency is obtained and the different side-mode suppression ratio is analyzed theoretically.Subcarrier of 16.2,10.0,18.2 and 20.0 GHz is obtained from 2.7,2.5 and 1.25 Gb/s NRZ signal injection into FP-LD respectively,in which the single sideband phase noise of-81.2 and-87.7 dBc/Hz at 10 kHz frequency deviation of 16.2 GHz is measured.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第11期3140-3147,共8页
Acta Optica Sinica
基金
国家自然科学基金重点项目(60736035)和国家自然科学基金(60977053)资助课题
关键词
光通信
全光混频
注入锁定
四波混频
边模抑制比
optical communication
all-optical frequency mixing
injection locking
four wave mixing(FWM)
side-mode suppression ratio(SMSR)