QSFP+光收发模块的热设计研究

Research on Thermal Design for QSFP + Optical Transceiver Module

QSFP+光收发模块作为有源光器件中的重要组成部分,在宽带通信网络领域占有非常重要的地位。随着光网络信息容量激增,QSFP+光收发模块的速率逐步提高,其热流密度逐渐增大,模块的散热性能成为制约其进一步发展的重要因素。文中通过分析QSFP+光模块的热传递路径,建立了光模块的热模型,采用仿真分析的方法得出不同材料、接触热阻以及发热器件布局对光模块温度场的影响。结果表明,通过减小接触热阻、提高材料的导热系数、缩短发热器件与散热片之间的距离可以有效提高光模块的散热性能。

QSFP＋ optical transceiver module as an important component of the active optical device plays a key role in the field of broadband communication network. With the increase of the data capacity of optical network, the data rate of QSFP＋ optical transceiver module and the heat flux of the module increase gradually, and the thermal performance of the module becomes an important factor restricting its further development. This paper analyzes the heat transfer path of QSFP＋ optical module and then establishes the thermal model of the optical module. The effects of different materials, contact thermal resistances and layouts of heating de- vices on the temperature field of the optical module are concluded by simulation analysis. The results show that the thermal performance of the optical module can be improved by reducing contact thermal resistance, in- creasing material thermal conductivity and reducing the distance between heating devices and the heat sink.