光子学报, 2015, 44 (1): 0125002, 网络出版: 2015-01-26
高速相干光通信平衡探测器研究
The Research of Balance Detector for High-speed Coherence Optical Communications
应用光电子学 分析与测试 平衡光电探测器 光通信 解调 跨阻放大器 灵敏度 Application of optoelectronics Analysis and testing Balance photodetector Optical communication Demodulation TIA Sensitivity
摘要
通过对相干光通信平衡探测器原理及关键技术进行分析,设计了一套高速平衡探测系统,并在室内构建了相干光通信测试平台.测试实验发现: 该平衡探测器可以实现不同速率的相干探测,可为相干光通信提供有利的条件.在2.5 Gbps通信速率下直接探测时,单管灵敏度可以达到-26 dBm,动态范围为-26-3 dBm;在本振光为3 dBm时,相干探测的灵敏度可以达到-46.5 dBm,动态范围为-46.5-3 dBm.
Abstract
The principle and key technology of balance detcetor for coherent optical communication were analyzed.A set of high-speed balance detection system was designed,and the coherent optical communications test platform was built indoors.Actual tests show that the balance detector can achieve the different rate of coherent detection,which can provide an essential support for coherent optical communication.Under 2.5 Gbps,the sensitivity can be obtained -26 dBm under the condition of direct detection using single pipe,where dynamic range is -26-3 dBm.When the power of local oscillator laser is 3dBm,coherent detection sensitivity can reach 46.5 dBm,where dynamic range is -46.5-3 dBm.
代永红, 艾勇, 肖伟, 周浩天, 单欣. 高速相干光通信平衡探测器研究[J]. 光子学报, 2015, 44(1): 0125002. DAI Yong-hong, AI Yong, XIAO Wei, ZHOU Hao-tian, SHAN Xin. The Research of Balance Detector for High-speed Coherence Optical Communications[J]. ACTA PHOTONICA SINICA, 2015, 44(1): 0125002.
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