光模块中互连结构的补偿设计  

Compensation Design of Interconnection Structure in Optical Module

作　　者：宁静 宋小平 刘成刚 余春平 NING Jing;SONG Xiao-ping;LIU Cheng-gang;YU Chun-ping(Accelink Technologies Co.,Ltd.,Wuhan 430205,China;Wuhan Research Institute of Posts and Telecommunications,Wuhan 430074,China)

机构地区：[1]武汉光迅科技股份有限公司,武汉430205 [2]武汉邮电科学研究院,武汉430074

出　　处：《光通信研究》2021年第3期48-51,共4页Study on Optical Communications

摘　　要：为解决光模块中各组件之间使用金丝互连线或柔性电路板互连产生的信号完整性问题,通过三维电磁仿真软件HFSS对金丝互连线和柔性电路板的电磁特性进行分析,并设计了相应的补偿结构。电磁仿真结果表明,具有补偿结构的金丝互连线的回波损耗(在0~20 GHz频率范围内)增加了约18 dB,插入损耗减小了0.10~0.25 dB;具有补偿结构的柔性电路板回波损耗(在0~20 GHz频率范围内)增加了约17 dB,插入损耗减小了0.10 dB。测试结果表明,使用补偿结构的光模块具有良好的传输性能,该补偿结构可以有效地应用于光模块中互连结构的设计。In order to solve the signal integrity problem caused by gold bonding wire or flexible printed circuit interconnection between components in optical module, the electromagnetic characteristics of gold bonding wire and flexible printed circuit are analyzed by three-dimensional electromagnetic simulation software HFSS, and the corresponding compensation structure is designed. The electromagnetic simulation results show that the return loss(within 0~20 GHz frequency range) of gold bonding wire interconnects with compensation structure is increased by about 18 dB, and the insertion loss is reduced by 0.10~0.25 dB. The return loss(within 0~20 GHz frequency range) of the flexible printed circuit with compensation structure is increased by about 17 dB, and the insertion loss is reduced by 0.10 dB. The test results show that the optical module with compensation structure has good transmission performance, and the compensation structure can be effectively applied to the design of interconnection structure in optical module.

关 键 词：阻抗匹配 电容补偿 金丝键合 柔性电路板 

分 类 号：TN256[电子电信—物理电子学]