Title :
Asynchronous Phase Modulation for the Suppression of IFWM
Author :
Forzati, Marco ; Berntson, Anders ; Mårtensson, Jonas ; Djupsjöbacka, Anders
Author_Institution :
Acreo AB, Stockholm
Abstract :
Intrachannel four-wave mixing (IFWM) represents main source of impairments in fiber transmission at 40 Gb/s. A number of phase modulation techniques have been proposed to suppress the IFWM. In this paper, we study a cost-effective way of increasing the nonlinear tolerance of a 40-Gb/s wavelength division multiplexing transmission system by asynchronous phase modulation (APM). This can be achieved with one phase modulator placed after the wavelength multiplexer so that cost is shared by all channels. We show, by means of numerical simulations and laboratory experiments, that APM greatly improves the performance of ON-OFF-keying transmission.
Keywords :
amplitude shift keying; multiwave mixing; optical fibre communication; optical modulation; phase modulation; wavelength division multiplexing; IFWM; ON-OFF-keying transmission; asynchronous phase modulation techniques; bit rate 40 Gbit/s; fiber transmission; intrachannel four-wave mixing; nonlinear tolerance; phase modulator; wavelength division multiplexing transmission system; Bit rate; Costs; Four-wave mixing; Frequency; Numerical simulation; Optical fibers; Optical signal processing; Phase modulation; Polarization; Wavelength division multiplexing; Fiber optics communications; fibers; nonlinear optics;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.904414
