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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 11 — Nov. 1, 2011
  • pp: 881–890

Scalable and Spectrally Efficient Long-Reach Optical Access Networks Employing Frequency Interleaved Directly Detected Optical OFDM

Lenin Mehedy, Masuduzzaman Bakaul, Ampalavanapillai Nirmalathas, and Efstratios Skafidas  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 3, Issue 11, pp. 881-890 (2011)
http://dx.doi.org/10.1364/JOCN.3.000881


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Abstract

Extending the reach of traditional passive optical networks (PONs) to 100 km and increasing the split ratio beyond 1:64 are promising solutions in future optical access networks. These systems can accommodate increased users at longer distances potentially at low cost. With the increasing demand for higher bandwidths, current networks may soon require that bit rates upgrade to 100 Gb/s and beyond. However, the traditional on–off-keyed PON cannot be scaled up to such bit rates, as very high-speed opto-electronic devices are required that are still maturing. Therefore, to provide a comprehensive solution to these scalability issues of existing PONs, we propose a spectrally efficient (4 bit/s/Hz) 100 Gb/s long-reach PON based on 64 quadrature amplitude modulation (QAM) and frequency interleaved directly detected optical orthogonal-frequency-division multiplexing. We show that the proposed system may operate effectively over 100 km of single mode fiber with a 1024-way split and a receiver bandwidth of 25 GHz. It is also shown that the system can be provisioned to support even higher numbers of users (e.g., 2048, 4096, etc.) simply by varying the order of QAM with little compromise in bit rates. Moreover, the effects of various link parameters such as laser linewidths, fiber dispersion, filter profiles, etc. are also investigated for proper link dimensioning.

© 2011 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

History
Original Manuscript: May 25, 2011
Revised Manuscript: August 9, 2011
Manuscript Accepted: September 28, 2011
Published: October 31, 2011

Citation
Lenin Mehedy, Masuduzzaman Bakaul, Ampalavanapillai Nirmalathas, and Efstratios Skafidas, "Scalable and Spectrally Efficient Long-Reach Optical Access Networks Employing Frequency Interleaved Directly Detected Optical OFDM," J. Opt. Commun. Netw. 3, 881-890 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-11-881


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