Spectral density enhancement using coherent WDM

Ellis, Andrew D. and Garcia Gunning, Fatima C. (2005). Spectral density enhancement using coherent WDM. IEEE Photonics Technology Letters, 17 (2), pp. 504-506.


It is shown by numerical simulations that a significant increase in the spectral density of a 40-Gb/s wavelength-division-multiplexing (WDM) system can be obtained by controlling the phase of adjacent WDM channels. These simulations are confirmed experimentally at 40 Gb/s using a coherent,comb source. This technique allows the spectral density of a nonreturn-to-zero WDM system to be increased from 0.4 to 1 b/s/Hz in a single polarization. Optical filter optimization is required to minimize power crosstalk, and appropriate strategies are discussed in this letter. Index Terms-Filtering, optical communication terminals, phase control, wavelength-division multiplexing (WDM).

Publication DOI: https://doi.org/10.1109/LPT.2004.839393
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Uncontrolled Keywords: spectral density,wavelength-division-multiplexing,single polarization
Full Text Link: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1386363&tag=1
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Published Date: 2005-02
Authors: Ellis, Andrew D. ( 0000-0002-0417-0547)
Garcia Gunning, Fatima C.

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