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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 25855–25860

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

Domaniç Lavery, Maria Ionescu, Sergejs Makovejs, Enrico Torrengo, and Seb J. Savory  »View Author Affiliations


Optics Express, Vol. 18, Issue 25, pp. 25855-25860 (2010)
http://dx.doi.org/10.1364/OE.18.025855


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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.

© 2010 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 13, 2010
Revised Manuscript: November 3, 2010
Manuscript Accepted: November 3, 2010
Published: November 24, 2010

Citation
Domaniç Lavery, Maria Ionescu, Sergejs Makovejs, Enrico Torrengo, and Seb J. Savory, "A long-reach ultra-dense 10 Gbit/s WDM-PON using a digital coherent receiver," Opt. Express 18, 25855-25860 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-25855


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