In-band intermodulation induced by transient response of erbium-doped fiber amplifier  

作　　者：Guanghao Shao Xingwei Ye Guoqiang Zhang Yuqi Tan Jiquan Zhai Yuhao Yang 邵光灏;叶星炜;张国强;谈宇奇;翟计全;杨予昊(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China;Key Laboratory of IntelliSense Technology,China Electronics Technology Group Corporation,Nanjing 210039,China)

机构地区：[1]Nanjing Research Institute of Electronics Technology,Nanjing 210039,China [2]Key Laboratory of IntelliSense Technology,China Electronics Technology Group Corporation,Nanjing 210039,China

出　　处：《Chinese Optics Letters》2022年第1期192-197,共6页中国光学快报（英文版）

摘　　要：Transient response of an erbium-doped fiber amplifier(EDFA) is studied in an externally-modulated analog link.Double tones represented as transmitted radio frequency and dither signals are introduced.Extra modulation is generated owing to the EDFA’s transient response caused by a low-frequency dither signal.Therefore,the parasitic modulation is superposed to the output signals and may significantly affect in-band electrical spectra.Analytical and numerical solutions are both given,which agree well with experimental results.This work indicates that a suitable dither signal should be selected to maximize the carrier to intermodulation ratio.In-band spurious free dynamic range is optimized in the meantime.

关 键 词：erbium-doped fiber amplifier transient response dither signal carrier to intermodulation ratio externally-modulated analog link 

分 类 号：TN253[电子电信—物理电子学] TN722