Theoretical analysis of the performance of a single side band multicarrier source based on a re-circulating frequency shifter influenced by an optical bandpass filter  

作　　者：孟婉 席丽霞 张晓光 林嘉川 田凤 涂昊 张霞 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications [2]The Key Laboratory of Optical Communications Science and Technology in Shandong Province,Liaocheng University

出　　处：《Chinese Optics Letters》2013年第9期10-13,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61205065);Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20110005110014);Provincial Natural Foundation of Shandong(No.ZR2010FM043)

摘　　要：An optical bandpass filter （OBF） is an important element whose properties considerably influence the output performance of a single side band multicarrier source based on a re-circulating frequency shifter. The influence of the OBF in the loop on the output spectrum is theoretically analyzed. Numerical simulations and experiments are Mso carried out. Results show that the steepness and deepness of a nonflat-top filter influence the stability of the spectrum of an output multicarrier. To obtain multicarrier output with tone to noise ratio （TNR） 〉26 dB and error vector magnitude （EVM） 〈0.25, the steepness ratio of the filter should be greater than 0.75 and deepness should be larger than 0.99.An optical bandpass filter （OBF） is an important element whose properties considerably influence the output performance of a single side band multicarrier source based on a re-circulating frequency shifter. The influence of the OBF in the loop on the output spectrum is theoretically analyzed. Numerical simulations and experiments are Mso carried out. Results show that the steepness and deepness of a nonflat-top filter influence the stability of the spectrum of an output multicarrier. To obtain multicarrier output with tone to noise ratio （TNR） 〉26 dB and error vector magnitude （EVM） 〈0.25, the steepness ratio of the filter should be greater than 0.75 and deepness should be larger than 0.99.

关 键 词：Optics 

分 类 号：TN713.5[电子电信—电路与系统] TJ450.6[兵器科学与技术—火炮、自动武器与弹药工程]