Spectrally efficient next-generation optical access network incorporating a novel CWDM uplink combiner

J. Y. Ha, A. Wonfor, P. Ghiggino, R. V. Penty, I. H. White

Research output: Contribution to journalArticle


A novel wavelength division multiplexed subcarrier multiplexed (WDM/SCM) broadband (1-Gb/s per user) optical access network (OAN) architecture incorporating a coarse WDM (CWDM) uplink combiner is proposed. The concept is demonstrated through theoretical and experimental validation of a 10 D 1-Gb/s quadurature-phase-shift keying (QPSK) SCM optical network. Low penalty transmission is demonstrated for a proof-ofprinciple dual channel system with a range of 25 km. In agreement with simulation, experiments show that channel spacings of only 1 GHz are viable for Q factors of more than 18 dB. Simulations indicate that the system will operate with 40 wavelengths, each carrying 10 SCM channels at 1 Gb/s.

Original languageEnglish
Pages (from-to)978-983
Number of pages6
JournalOptics Express
Issue number2
Publication statusPublished - 19 Jan 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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