【作者】 谢三先； 黄永清； 刘庆； 段小峰； 王伟； 黄辉； 任晓敏；

【Author】 Xie Sanxian Huang Yongqing Liu Qing Duan Xiaofeng Wang Wei Huang Hui Ren Xiaomin (Key Laboratory of Information Photonics & Optical Communications Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China)

【机构】 北京邮电大学信息光子学与光通信教育部重点实验室；

【摘要】 随着光纤通信技术的发展,高量子效率、高速响应光电探测器在长距离高速光纤通信系统中的作用尤显突出。本文利用传输矩阵法对新型双吸收层光电探测器(RCE-PINIP)的量子效率进行了理论计算,然后用Mathcad软件对其进行了相应的理论仿真。结果显示,在50nm-800nm范围内,随着双吸收层厚度逐渐变大,这个RCE-PINIP模型的量子效率会出现多个峰值,而且量子效率的峰值先增大到最大值:在两个单吸收层厚度同为325nm时,量子效率达到98.6%,然后峰值逐渐递减。在两个单吸收层厚度分别固定为325nm时,量子效率随另一个单吸收层厚度的变化关系几乎相同。由此针对这个RCE-PINIP模型结构,通过对两个单吸收层厚度分别进行优化,进而得到了一个能实现高量子效率的优化结构模型。更多还原

【Abstract】 With the development of optical fiber communication technologies,high quantum efficiency and high speed photodetectors are more and more essential for long-hual high-bit-rate optical communication systems.The quantum efficiency (QE) of dual-absorption resonant cavity enhanced photodetector (RCE-PINIP) is calculated theoretically using transfer matrix method and the results are simulated by Mathcad.It is revealed that with the gradual increase of dual-absorption layer thickness in the 50nm-800nm range,there will emerge several QE peaks for this RCE-PINIP structure model.And the QE peak firstly increases to the highest value:98.6% when the two single absorption layers’ thicknesses are both 325nm,then the peak gradually decreases.When the two single absorption layers’ thicknesses are fixed at 325nm respectively,the other single absorption layer thickness dependences of QE are almost the same.So for this RCE-PINIP model structure,after the optimizations on both single absorption layer thicknesses,we obtain an optimized structure which can achieve high quantum efficiency.更多还原