Title :
A simplified model for estimating the capacity limit of an optical link in transporting multichannel M-QAM signals
Author_Institution :
Broadband Access Res. Dept., AT&T Bell Labs., Middletown, NJ, USA
Abstract :
We present a simplified model for quick estimation of the ultimate capacity of subcarrier multiplexed lightwave system using M-QAM. This analytical model assumes a directly modulated laser diode under relative intensity noise limitation and clipping distortion. Our results show very good agreement with those obtained using full analysis.
Keywords :
cable television; laser noise; optical fibre subscriber loops; quadrature amplitude modulation; semiconductor device noise; semiconductor lasers; subcarrier multiplexing; telecommunication signalling; analytical model; capacity limit; clipping distortion; directly modulated laser diode; multichannel M-QAM signals; optical link; relative intensity noise limitation; subcarrier multiplexed lightwave system; ultimate capacity; Analytical models; Diode lasers; Hybrid fiber coaxial cables; Intensity modulation; Linearity; Nonlinear distortion; Optical fiber communication; Optical noise; Signal to noise ratio; Spectral analysis;
Journal_Title :
Photonics Technology Letters, IEEE
