Title :
Polarization-Insensitive Phase-Preserving Regenerator Based on a Fiber Optical Parametric Amplifier With Dual Orthogonal Pumps
Author :
Xiaojie Guo ; Lei, Gordon K. P. ; Xuelei Fu ; Hon Ki Tsang ; Shu, Chester
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
We investigate the gain-saturation characteristics of a dual-orthogonal-pump fiber optical parametric amplifier. Nearly uniform power transfer functions have been obtained for various input signal polarizations by adjusting the total pump power. Based on this physical behavior, we demonstrate polarization-insensitive phase-preserving amplitude regeneration of 40-Gb/s nonreturn-to-zero differential phase-shift keying signals. The receiver sensitivity has been improved by a maximum value of 4.7 dB.
Keywords :
differential phase shift keying; optical fibre amplifiers; optical fibre networks; optical fibre polarisation; optical parametric amplifiers; optical pumping; optical repeaters; optical transfer function; bit rate 40 Gbit/s; dual-orthogonal-pump fiber optical parametric amplifier; gain-saturation characteristics; input signal polarization; nonreturn-to-zero differential phase-shift keying signal; physical behavior; polarization-insensitive phase-preserving amplitude regeneration; polarization-insensitive phase-preserving regenerator; power transfer functions; pump power; receiver sensitivity; Fiber nonlinear optics; Optical fiber amplifiers; Optical fiber communication; Optical fiber polarization; Optical polarization; All-optical signal regeneration; fiber optical parametric amplifier; nonlinear fiber optics; optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2236086
