用于空间光互连的850nm VCSEL 4×4阵列的热场模拟  

Thermal Model and Simulation of 850 nm VCSEL 4×4 Arrays for Applications in Optical Interconnection System

作　　者：田坤[1] 朱少立[2] 王品红[1] 周玉红[1] 

机构地区：[1]重庆光电技术研究所,重庆400060 [2]重庆邮电大学光电工程学院,重庆400065

出　　处：《半导体光电》2010年第1期96-100,共5页Semiconductor Optoelectronics

摘　　要：作为空间光互连系统的发射部分,垂直腔表面发射激光器(VCSEL)阵列的热特性直接影响到光互连系统的稳定性。建立了850nm VCSEL 4×4阵列的热场数学模型,并利用有限差分法求解热传导和热扩散方程,得出了在VCSEL单元工作电流为10mA时阵列的热场分布:VCSEL单元有源层温度约为50℃;整个阵列的温度仅为38.65℃。依据此结果制作了850nm 4×4光互连模块,其每通道稳定传输速率达到1Gbit/s。As the emitting part of the optical-interconnection system, thermal characteristics of VCSEL array effect the stability of the system directly. A mathematic thermal model of the 850 nm VCSEL 4×4 array is established, and the thermal conduction and diffusion equations with the FDTD method are applied to obtain the thermal distribution of the whole array with an operating current of 10mA. Calculations show that the temperature of active layer in the cell is about 50℃, while the temperature of the whole array system is only 38.65℃. With these results, an 850 nm 4×4 optical interconneetion module was fabricated successfully and the stable data rate for each channel is up to 1 Gbit/s.

关 键 词：光互连 垂直腔表面发射激光器 热扩散方程 有限差分法 

分 类 号：TN36[电子电信—物理电子学]