Impact of band rejection in multichannel broadband subcarrier multiplexing

Abstract

This paper explores experimentally the impairments in performance that are generated when multiple single-sideband (SSB) subcarrier multiplexing (SCM) signals are closely allocated in frequency to establish a spectrally efficient wavelength division multiplexing (WDM) link. The performance of cost-effective SSB WDM/ SCM implementations, without optical filters in the transmitter, presents a strong dependency on the imperfect sideband suppression ratio that can be directly achieved with the electro-optical modulator. A direct detected broadband multichannel SCM link composed of a state-of-the-art optical IQ modulator and five quadrature phase-shift keyed (QPSK) subcarriers per optical channel is presented, showing that a suppression ratio of 20 dB obtained directly with the modulator produced a penalty of 2 dB in overall performance, due to interference between adjacent optical channels.

Publication DOI: https://doi.org/10.1364/JOCN.7.000248
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Funding: Science Foundation Ireland (09/IN.1/12653, 10/CE/I1853); Enterprise Ireland (CFTD CF/2011/1627); and EPSRC (EP/L000091/1)
Uncontrolled Keywords: optical IQ modulator,sideband suppression ratio (SSR),subcarrier multiplexing (SCM),wavelength division multiplexing (WDM),Computer Networks and Communications
Full Text Link: https://www.osa ... ri=jocn-7-4-248
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2015-03-12
Authors: Gutiérrez, Fernando A.
Perry, Philip
Smyth, Frank
Ellis, Andrew D. ( 0000-0002-0417-0547)
Barry, Liam P.

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Version: Accepted Version


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