CUED Publications database

Adaptive modulation induced WDM impairment reduction in optical OFDM PONs

Giacoumidis, E and Wei, JL and Tang, JM (2010) Adaptive modulation induced WDM impairment reduction in optical OFDM PONs. In: UNSPECIFIED.

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Abstract

The transmission performance of multi-channel adaptively modulated optical OFDM (AMOOFDM) signals is numerically investigated, for the first time, in optical amplification- and chromatic dispersion compensation-free, intensity-modulation and direct-detection systems incorporating directly modulated DFB lasers (DMLs). It is shown that adaptive modulation not only reduces significantly the nonlinear WDM impairments induced by the effects of cross-phase modulation and four-wave mixing, but also compensates effectively for the DML-induced frequency chirp effect. In comparison with identical modulation, adaptive modulation improves the maximum achievable signal transmission capacity of a central channel by a factor of 1.3 and 3.6 for 40km and 80km SMFs, respectively, with corresponding dynamic input optical power ranges being extended by approximately 5dB. In addition, adaptive modulation also enables cross-channel complementary modulation format mapping, leading to an improved transmission capacity of the entire WDM system. Copyright © 2010 The authors.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: Optical fibre communication Orthogonal frequency division multiplexing (OFDM) Single-mode fibre (SMF) Wavelength-division-multiplexing (WDM)
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:08
Last Modified: 27 Nov 2014 19:19
DOI: