Performance limitations of subcarrier multiplexed WDM signal transmissions using QAM modulation

Kyoungsoo Kim, Jaehoon Lee, Jichai Jeong

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We theoretically investigate the performance limitations of subcarrier multiplexed (SCM) wavelength-division-multiplexing (WDM) systems using optical double-sideband (DSB) modulated, 16-quadrature amplitude-modulated (QAM) signals. The performance limitations are investigated using crosstalk power and SCM channel spacing for various transmission conditions, including impairment factors such as dispersion and fiber nonlinearities for a single wavelength channel first. The effects of WDM channel spacing on SCM systems with multiwavelength channels are also evaluated via the calculated bit error rate (BER) performance, based on the performance limitations found in the single-wavelength simulation. This enables us to provide guidelines for the design of SCM/WDM systems for fiber-to-the-home (FTTH) network in WDM-passive optical network (PON) architecture, based on the performance limitations.

Original languageEnglish
Pages (from-to)4105-4111
Number of pages7
JournalJournal of Lightwave Technology
Issue number18
Publication statusPublished - 2009 Sept 15


  • Optical DSB
  • QAM
  • Subcarrier multiplexing
  • WDM

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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