Experimental demonstration of RSOA-based WDM PON with PPM-encoded downstream signals  

作　　者：刘磊 张民 刘明涛 张小频 

机构地区：[1]State Key Laboratory of IPOC,Beijing University of Posts and Telecommunications

出　　处：《Chinese Optics Letters》2012年第7期30-33,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61072008);the National "863" Project of China(No.2009AA01z255);the National "111" Project of China(No.B07005);the Beijing New Star Programme of Science and Technologies(No. 2007A048);the Fundamental Research Funds for Central Universities(Nos.2009GYBZ and 2009RC0401);the Program for Excellent Talents in BUPT

摘　　要：Pulse position modulation （PPM） is introduced downstream of the reflective semiconductor optical am- plifier （RSOA）-based single-fiber full-duplex bidirectional wavelength division multiplex passive optical network （WDM PON） to suppress the interference brought by the remodulation effect in the RSOA, Rayleigh backscattering, and reflection of the connection devices. In addition, because of the power- efficient characteristic of the PPM-encoded signals, the power budget shows clear improvement. As the experimental tests indicate, with -6 dB extinction ratio （ER） in the downstream signal, the receiving sensitivity of the PPM-encoded channel is -2.6 and -3 dB higher than that of the NRZ （Non-return to zero）-encoded channel in the downlink and uplink, respectively.Pulse position modulation （PPM） is introduced downstream of the reflective semiconductor optical am- plifier （RSOA）-based single-fiber full-duplex bidirectional wavelength division multiplex passive optical network （WDM PON） to suppress the interference brought by the remodulation effect in the RSOA, Rayleigh backscattering, and reflection of the connection devices. In addition, because of the power- efficient characteristic of the PPM-encoded signals, the power budget shows clear improvement. As the experimental tests indicate, with -6 dB extinction ratio （ER） in the downstream signal, the receiving sensitivity of the PPM-encoded channel is -2.6 and -3 dB higher than that of the NRZ （Non-return to zero）-encoded channel in the downlink and uplink, respectively.

关 键 词：Passive optical networks Semiconductor optical amplifiers 

分 类 号：TN929.1[电子电信—通信与信息系统] TP277[电子电信—信息与通信工程]