Impact of band rejection in multichannel broadband subcarrier multiplexing

Gutiérrez, Fernando A., Perry, Philip, Smyth, Frank, Ellis, Andrew D. and Barry, Liam P. (2015). Impact of band rejection in multichannel broadband subcarrier multiplexing. Journal of Optical Communications and Networking, 7 (4), pp. 248-252.


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:
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)
Published Date: 2015-03-12
Authors: Gutiérrez, Fernando A.
Perry, Philip
Smyth, Frank
Ellis, Andrew D. ( 0000-0002-0417-0547)
Barry, Liam P.



Version: Accepted Version

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