探测响应对时间交织光模数转换通道失配的影响  

Effects of Photodetection Response on Channel Mismatches of Time-Interleaved Photonic Analog to Digital Conversion

作　　者：薛翔 吴龟灵[1] 陈建平[1] Xue Xiang, Wu Guiling, Chen Jianping(State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University Shanghai 200240, China)

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240

出　　处：《中国激光》2018年第9期313-318,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(61535006;61627817)

摘　　要：从时间交织光模数转换(TIPADC)的通道响应出发,分析了后端光电探测响应与通道失配的关系及其对失配校正的影响,并进行了仿真验证。结果表明:在探测响应不导致串扰的情况下,通道失配的影响与频率无关,可以用单一频点处得到的失配参数进行校正。在探测响应会导致串扰的情况下,不同增益下的通道响应呈同比例变化,但不同时间失配下的通道响应呈不同比例变化,用单一频点处得到的失配参数只能对增益失配进行校正。Based on the channel response of time-interleaved photonic analog to digital conversion（TIPADC）system,the relationship between photodetection response and channel mismatches,as well as its effects on correction of mismatches is analyzed.The simulation is also performed.The results show that the influence of channel mismatches is irrelevant to the frequency when the photondetection response do not induce the crosstalk.In this case,the mismatch correction can be achieved with mismatch parameters obtained at a single frequency.In comparison,in the situation that the photondetection response can cause the crosstalk,the channel response under different gains has the same proportion change,while the channel response at different time mismatches changes in different proportions.Thus,the gain mismatches can only be corrected through mismatch parameters obtained at a single frequency.

关 键 词：光通信 信号处理 光模数转换 探测响应 通道失配 校正 

分 类 号：TN203[电子电信—物理电子学]