title: Alleviation of additional phase noise in fiber optical parametric amplifier based signal regenerator.
abstract: We theoretically and numerically explain the power saturation and the additional phase noise brought by the fiber optical parametric amplifier (FOPA). An equation to calculate an approximation to the saturated signal output power is presented. We also propose a scheme for alleviating the phase noise brought by the FOPA at the saturated state. In simulation, by controlling the decisive factor dispersion difference term Δk of the FOPA, amplitude-noise and additional phase noise reduction of quadrature phase shift keying (QPSK) based on the saturated FOPA is studied, which can provide promising performance to deal with PSK signals.
authors.affiliation: Department of Electronic Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan. jinlei@cntp.t.u-tokyo.ac.jp
authors.forename: Lei
authors.initials: L
authors.lastname: Jin
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.forename: Shinji
authors.initials: S
authors.lastname: Yamashita
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D009622:Noise; D055100:Optical Fibers; D012815:Signal Processing, Computer-Assisted; D013685:Telecommunications / Q000295:instrumentation*