基于注入锁定激光器和光相位补偿的相干解调方案  

Coherent Demodulation Based on Injection Locking Laser and Optical Phase Compensation

作　　者：张旭蕊 王菊 于晋龙 苏学敏 马闯 Zhang Xurui;Wang Ju;Yu Jinlong;Su Xuemin;Ma Chuang(School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学电气自动化与信息工程学院,天津300072

出　　处：《激光与光电子学进展》2024年第5期179-184,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62005194)。

摘　　要：提出一种基于注入锁定本地激光器和光相位补偿的相干解调方案。通过注入锁定恢复本振光(LO),利用零差相干检测的方式对信号光进行解调,使用比例-积分-微分(PID)算法控制压电陶瓷(PZT)补偿光相位,使光相位差波动不超过±4.8°。实现了超密集波分复用无源光网络(UDWDM-PON)系统双用户400 Mbit/s伪随机二进制序列(PRBS)的调制、传输和解调,并进行了误码率(BER)测试。A coherent demodulation scheme based on injection locking local laser and optical phase compensation is proposed.The local oscillator(LO)is recovered by injection locking,and the signal is demodulated via homodyne coherent detection.Using the proportional-integral-derivative(PID)algorithm to control the piezoelectric ceramic(PZT)enables the optical phase compensation.The results demonstrate that the fluctuation of optical phase difference does not exceed±4.8°.The modulation,transmission,and demodulation experiments of a dual-user 400-Mbit/s pseudo-random binary sequence(PRBS)in the ultra-dense wavelength division multiplexing passive optical network(UDWDM-PON)are implemented.Additionally,the bit error rate(BER)test is conducted.

关 键 词：相干解调 UDWDM-PON 注入锁定 PID控制 光相位补偿 

分 类 号：TN913[电子电信—通信与信息系统]