title: Spectrally efficient next-generation optical access network incorporating a novel CWDM uplink combiner.
abstract: 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 x1-Gb/s quadurature-phase-shift keying (QPSK) SCM optical network. Low penalty transmission is demonstrated for a proof-of-principle 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.
authors.affiliation: Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, UK. jha@partners.org
authors.forename: J Y
authors.initials: JY
authors.lastname: Ha
authors.forename: A
authors.initials: A
authors.lastname: Wonfor
authors.forename: P
authors.initials: P
authors.lastname: Ghiggino
authors.forename: R V
authors.initials: RV
authors.lastname: Penty
authors.forename: I H
authors.initials: IH
authors.lastname: White