阵列式铌酸锂电光调制器偏置点控制技术研究(特邀)  

Research on Bias Point Control Technology for Array-Type Electro-Optical Modulators Based on Lithium Niobate(Invited)

作　　者：张豪洋 匡作鑫 陈冠宇 余华[1] Zhang Haoyang;Kuang Zuoxin;Chen Guanyu;Yu Hua(Key Laboratory of Optoelectronic Technology&System,Ministry of Education,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学光电工程学院光电技术及系统教育部重点实验室,重庆400044

出　　处：《激光与光电子学进展》2024年第11期63-70,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62374022);重庆市技术创新与应用发展专项重点项目(Cstc2021jscx-gksbX0045)。

摘　　要：受材料自身特性的影响,电光调制器的偏置工作点会随环境改变发生漂移,从而影响调制器的调制效果。针对铌酸锂马赫-曾德尔电光调制器偏置点漂移的问题,研究适用于四阵列平行式电光调制器偏置点控制技术,提出了一种结合光功率和扰动信号幅值检测的控制方法,采用时分复用、增益幅值可调、双模式识别等方法有效减少了硬件冗余,实现了对偏置工作点的精确控制。Due to the influence of inherent characteristics of material,the bias operating point of electro-optic modulator may drift with changes in environment,thereby affecting the modulation performance of the modulator.To solve the bias point drift issue of lithium niobate Mach-Zehnder electro-optic modulators,bias control techniques suitable for 4-array parallel electro-optic modulators is researched.Based on time division multiplexing,adjustable gain amplitude,dual pattern recognition,and other methods,a control method combining optical power and disturbance signal amplitude detection is proposed,which reduces hardware redundancy and achieves precise control of the bias operating point.

关 键 词：电光调制 时分复用 偏置控制 光功率检测 扰动信号检测 

分 类 号：TN256[电子电信—物理电子学]