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A long-reach ultra-dense 10 Gbit/s WDM-PON using a digital coherent receiver

Lavery, D; Ionescu, M; Makovejs, S; Torrengo, E; Savory, SJ; (2010) A long-reach ultra-dense 10 Gbit/s WDM-PON using a digital coherent receiver. OPT EXPRESS , 18 (25) 25855 - 25860. Gold open access

Abstract

We investigate the impact of channel spacing and nonlinear transmission over 120 km of standard single mode fiber for a 10 Gbit/s long-reach wavelength division multiplexed passive optical network (WDM-PON). We employed polarization division multiplexed quadrature phase shift keying (PDM-QPSK), which allowed data transmission at 3.125 GBaud, including a 25% overhead for forward error correction. To receive this spectrally efficient modulation format, a digital coherent receiver was employed, allowing for both frequency selectivity and an increased sensitivity of -45 dBm (25 photons/bit). We investigated a channel spacing as low as 5 GHz, for which the loss budget was 48.6 dB, increasing to 54.0 dB for a 50 GHz grid. (c) 2010 Optical Society of America

Type:Article
Title:A long-reach ultra-dense 10 Gbit/s WDM-PON using a digital coherent receiver
Open access status:An open access publication
Publisher version:http://www.opticsexpress.org
Keywords:ACCESS
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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