作者: Kenneth KY Wong , Michel E Marhic , Leonid G Kazovsky
关键词: Cross-phase modulation 、 Optics 、 Multiplexing 、 Intensity modulation 、 Cable television 、 Detector 、 Phase modulation 、 Wavelength-division multiplexing 、 Physics 、 Nonlinear system
摘要: We investigate, theoretically and experimentally, a novel scheme to suppress the nonlinear crosstalk between wavelengths in wavelength-division multiplexing (WDM) analog fiber systems. It is based on an improvement previously introduced crosstalk-suppression technique by complementary modulation of two closely spaced optical twin carriers (TCs). By combining modulated TCs balanced detector (TCs-balanced detection [TC-BD]), suppression can be improved further. have obtained up 50-dB reduction at low frequencies, where most severe, interesting region for cable television