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
张旭蕊 1王菊 1于晋龙 1苏学敏 1马闯1
作者信息
- 1. 天津大学电气自动化与信息工程学院,天津 300072
- 折叠
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.
Abstract
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Key words
coherent demodulation/UDWDM-PON/injection locking/PID control/optical phase compensation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据