Title :
Regeneration of RZ-DPSK signals by fiber-based all-optical regenerators
Author :
Matsumoto, Masayuki
Author_Institution :
Dept. of Commun. Eng., Osaka Univ., Japan
fDate :
5/1/2005 12:00:00 AM
Abstract :
Reshaping of return-to-zero differential-phase-shift keying (RZ-DPSK) signals by fiber-based all-optical 2R regenerators is numerically studied. Diffusion of the phase of the signal in the process of amplitude stabilization is assessed for two types of regenerators: one based on soliton compression followed by narrow-band filtering, and another based on ultrafast saturation of four-wave mixing (FWM) in parametric amplifier configuration. It is shown that the FWM-based regenerators induce small phase diffusion and they can improve RZ-DPSK transmission performance.
Keywords :
differential phase shift keying; high-speed optical techniques; multiwave mixing; optical fibre communication; optical filters; optical parametric amplifiers; optical repeaters; optical saturation; optical solitons; self-phase modulation; FWM; RZ-DPSK; amplitude stabilization; fiber-based all-optical regenerators; four-wave mixing; narrow-band filtering; parametric amplifier; phase diffusion; return-to-zero differential-phase-shift keying; soliton compression; ultrafast saturation; Fiber nonlinear optics; Filtering; Four-wave mixing; Optical amplifiers; Optical fiber communication; Optical fiber filters; Optical fibers; Repeaters; Solitons; Stimulated emission; Fiber nonlinearity; optical fiber communication; optical regeneration;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.846755
