金属交叉电极结构对光电探测器响应带宽的影响

随着光纤通信朝着高数据、高容量的方向发展,这就要求光电探测器具有很高的响应速度。金属交叉电极的电容非常小,广泛应用于高速光电探测器中。本文利用MATLAB软件进行仿真和模拟,详细分析了电极的宽度、间隙的宽度以及电极的对数对器件带宽的影响。得到的结论为:电极宽度越窄、间隙的宽度越宽、对数越小时,电极的电容就越小,及响应带宽就越大。

With the development of optical fiber communication in the direction of high data and high capacity, it is required that the photoelectric detector has a high response speed.Metal-semiconductor-metal device has the characteristics of small size, high sensitivity, reliable performance and high speed, it is widely used in military and civilian applications.Using MATLAB software for simulation and modeling, detailed analysis of the impact of the electrode width, width of the gap, and the logarithm of the electrode on the capacitance and bandwidth of the device.The results are that the narrower electrode, the wider gap and the larger number of electrode, the capacitance of the device is very small, which the response bandwidth is very wide.