Investigation on gain characteristics in non-degenerate cascaded phase sensitive parametric amplifiers  

作　　者：饶岚 余重秀 申向伟 桑新柱 苑金辉 曾小芳 忻向军 

机构地区：[1]School of Electronic Engineering,Beijing University of Posts and Telecommunications [2]Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

出　　处：《Optoelectronics Letters》2012年第3期172-175,共4页光电子快报（英文版）

基　　金：supported by the National Basic Research Program of China (Nos.2010CB327605 and 2010CB328300);the Specialized Research Fund for the Young Scholars Program of Beijing University of Posts and Telecommunications (Nos.2011RC0309 and 2011RC008)

摘　　要：We theoretically and experimentally show the impact of the ratio between the signal and idler generated from the PIA part on the gain characteristics in the continuous wave (CW) pump non-degenerate cascaded phase-sensitive fiber optical parametric amplifier (PS-FOPA). The results show that the length of highly nonlinear fiber (HNLF) used for generating the idler can cause the variation of power ratio between the idler and signal, which significantly affects the gain characteristics of the PS-FOPA under the small signal gain condition. To obtain high gain, it is better to choose long HNLF to generate idler. In our experiment, 5.5 dB gain and 18 nm bandwidth (on/off gain>10 dBm) in PS-FOPA can be achieved when 300 m-long HNLF instead of 200 m-long HNLF is used in PIA.

关 键 词：Light amplifiers Nonlinear optics Parametric amplifiers 

分 类 号：TN722.31[电子电信—电路与系统]