Using bidirectional modulation of 2-Ch phase modulator as basis for nonlinear distortion compensation in analog photonic links  

作　　者：牛剑 徐坤 谢小军 戴一堂 李建强 纪越峰 林金桐 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

出　　处：《Chinese Optics Letters》2013年第8期24-27,共4页中国光学快报（英文版）

基　　金：supported by the National "863" Program of China(No.2011AA010306);the National "973" Program of China(No.2012CB315705);the National Natural Science Foundation of China(Nos.61271042,61107058,and 61120106001);the Beijing Excellent Doctoral Thesis Project(No.YB20101001301);the BUPT Excellent Ph.D.Students Foundation(No.CX201221);the Cooperation Project between Province and Ministries(No.2011A090200025);the Fundamental Research Funds for the Central Universities

摘　　要：We propose a third-order intermodulation distortion （IMD3） compensation scheme based on the bidirec- tional modulation of 2-Ch phase modulator （PM）. We realize the destructive combination of IMD3 by using different modulation efficiencies and appropriately adjusting the input optical power ratio to satisfy a fixed relationship with modulation efficiency. The primary advantage of this scheme is that out-of-phase IMD3 is introduced using only one 2-Ch PM, thereby resulting in the cancellation of IMD3. Up to 27-dB suppression in IMD3 is experimentally demonstrated--a feature that will be useful in low-distortion analog or）tical transrni^sirm.We propose a third-order intermodulation distortion （IMD3） compensation scheme based on the bidirec- tional modulation of 2-Ch phase modulator （PM）. We realize the destructive combination of IMD3 by using different modulation efficiencies and appropriately adjusting the input optical power ratio to satisfy a fixed relationship with modulation efficiency. The primary advantage of this scheme is that out-of-phase IMD3 is introduced using only one 2-Ch PM, thereby resulting in the cancellation of IMD3. Up to 27-dB suppression in IMD3 is experimentally demonstrated--a feature that will be useful in low-distortion analog or）tical transrni^sirm.

关 键 词：OPTICS PHYSICS 

分 类 号：TN761[电子电信—电路与系统] TP315[自动化与计算机技术—计算机软件与理论]