光电收发模块作为光通信系统中的两个核心模块, 承载着电信号转化为光信号与光信号转化为电信号的核心功能, 其性能对整个通信质量起着决定性作用。文章提出一种改进型的高速率、低功耗和低成本4通道25 Gbit/s光电互连收发模块的封装设计, 在传统的以驱动芯片和调制器为基础作为发端和以探测器和跨阻放大器为基础作为收端的同时, 增加时钟数据恢复电路, 优化封装结构, 通过抑制链路抖动和减小阻抗失配引起的反射来提高通道带宽。优化后收发模块的背靠背眼图测试结果显示, 在25 Gbit/s速率下, 系统的误码率在1E-13以下, 且收发模块的总功率仅为3.9 W。

As the core module in optical communication system, the optical transceiver module achieves the core function of converting electrical signals into optical signals and optical signals into electrical signals. Its performance plays a decisive role in the overall communication quality. This paper proposes an improved high-speed, low power consumption, low-cost 4-channel 25 Gbit/s optoelectronic interconnect transceiver module package design. Based on the traditional driver chip and modulator as the transmitter and the detector and trans-impedance amplifier as the receiver, we add a clock data recovery circuit to the transceiver module and optimize the package structure, and improve link performance by suppressing link jitter and reducing reflection caused by impedance mismatch at the same time. The back-to-back eye diagram test results of the optimized transceiver module show that the error rate of the system is below 1E-13 at 25 Gbit/s, and the total power of the transceiver module is only 3.9 W.