QSFP+光模块热仿真与实验研究  

Thermal Simulation and Experimental Study of QSFP+Optical Modules

作　　者：毛建冬 肖国华[1] 郑子军[1] MAO Jiandong;XIAO Guohua;ZHENG Zijun(College of Electromechanical Engineering,Zhejiang Institute of Business and Technology,Ningbo 315000,China)

机构地区：[1]浙江工商职业技术学院机电工程学院,浙江宁波315000

出　　处：《光通信研究》2025年第1期67-71,共5页Study on Optical Communications

基　　金：2023年度浙江省教育厅一般科研资助项目(Y202351852);宁波市公益性研究资助项目(2022S129);2022年度浙江工商职业技术学院科研资助项目(党建与思政专项)(DJ2022Y05)。

摘　　要：【目的】为了研究高速光模块温度分布和风流需求,文章旨在优化散热设计,确保光模块稳定运行。【方法】文章采用Flotherm仿真分析建立光模块的数值风洞模型,得到其正常工作时各元器件的温度场分布以及系统稳定时的风扇工作风流量,这些参数符合多源协议(MSA)规范里的散热要求。同时,设计了“L”型风洞治具以方便测试与安装,实验测试了各芯片实际表面温度和风洞的实际工作的风流量,验证了仿真结果的准确性。【结果】结果表明,在壳体最高温度为70℃时,对于各芯片表面温度,仿真与实测温度差在2℃以内,误差在5%以内;对于整个光模块散热所需要的风流量,仿真与实测结果相差0.2立方英尺每分钟(CFM),误差在7%以内。【结论】由此证明仿真和实测方法可行,且误差较小,为高速光模块散热设计与测试提供了重要参考依据。【Objective】In order to study the temperature distribution and airflow requirements of high-speed optical modules,aiming to optimize the heat dissipation design and ensure the stable operation of optical modules.【Methods】The article adopts Flotherm simulation analysis to establish the numerical wind tunnel model of the optical module.The temperature distribution of each component during normal operation is obtained.The working air flow of the fan is also obtained when the system is stabilized,which are in line with the heat dissipation requirements in the specification of Multi-Source Agreement(MSA).In order to facilitate the testing and installation,the"L"type wind tunnel fixture is designed.The actual surface temperature of each chip and the actual working wind flow rate of the wind tunnel are tested experimentally to verify the accuracy of the simulation results.【Results】The results show that in the case of the maximum temperature of 70℃,for the surface temperature of each chip,the difference between the simulation and the measured temperature is less than 2℃,with an error of less than 5%.For the airflow rate required for the heat dissipation of the entire optical module,the difference between the simulation and measured results is 0.2 Cubic Feet per Minute(CFM),with an error within 7%.【Conclusion】It can be shown that the simulation and measurement methods are feasible and the error is small,which provides an important reference value in the design and testing of heat dissipation of high-speed optical modules.

关 键 词：光模块 热仿真 温度场 风流量 数值风洞 

分 类 号：TN03[电子电信—物理电子学] TK121[动力工程及工程热物理—工程热物理]