Title :
Dispersion Compensation in Non-Linear Self Phase Modulation (SPM) and Cross Phase Modulation (XPM) Induced Optical Channel Using Vectorial MLSE Equalizer
Author :
Rozen, O. ; Cohen, T. ; Kats, G. ; Sadot, D. ; Levy, A. ; Mahlab, U.
Author_Institution :
Ben-Gurion Univ., Beer-Sheva
Abstract :
We propose and experimentally demonstrate an improved vectorial maximum likelihood sequence equalizer (MLSE) method that enhances inter-symbol-interference (ISI) mitigation in highly non-linearly distorted channel by self phase modulation (SPM) in a single channel system and cross phase modulation (XPM) in WDM system. The vectorial MLSE is based on "over sampling" of the distorted signal according to Nyquist criterion of the broadened signal spectrum due to SPM. For XPM, the noise caused by this effect is modeled using histogram estimation with multiple samples per bit. Experimental and computer simulation results indicate significant improvement of BER results using the proposed vectorial equalizer.
Keywords :
Nyquist criterion; equalisers; error statistics; intersymbol interference; maximum likelihood sequence estimation; optical fibre communication; optical fibre dispersion; optical modulation; phase modulation; signal sampling; wavelength division multiplexing; BER; Nyquist criterion; WDM system; cross phase modulation; dispersion compensation; distorted signal over sampling; histogram estimation; inter symbol-interference; maximum likelihood sequence; non linear self phase modulation; optical channel; optical fibre; vectorial MLSE equalizer; Equalizers; Intersymbol interference; Maximum likelihood estimation; Nonlinear distortion; Nonlinear optics; Optical distortion; Optical modulation; Phase distortion; Phase modulation; Scanning probe microscopy;
Conference_Titel :
Transparent Optical Networks, 2007. ICTON '07. 9th International Conference on
Conference_Location :
Rome
Print_ISBN :
1-4244-1249-8
Electronic_ISBN :
1-4244-1249-8
DOI :
10.1109/ICTON.2007.4296093
