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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. 5 — May. 1, 2011
  • pp: 426–434

Single-Channel Directly Detected Optical-OFDM Towards Higher Spectral Efficiency and Simplicity in 100 Gb/s Ethernet and Beyond

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


Journal of Optical Communications and Networking, Vol. 3, Issue 5, pp. 426-434 (2011)
http://dx.doi.org/10.1364/JOCN.3.000426


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Abstract

The recently proposed IEEE P802.3ba 100 Gb/s Ethernet (100 GbE) standard has adopted 100 Gb/s transmission over 10 and 40 km of single-mode fiber (SMF) using four-channel (4 × 25 Gb/s) wavelength-division-multiplexed (WDM) systems, which is neither cost-effective nor spectrally efficient compared with a single-channel system exploiting the combination of higher-order modulations and optical orthogonal frequency division multiplexing (O-OFDM). This paper demonstrates that a spectrally efficient (4 bits/s/Hz) single-channel 100 Gb/s system can be designed based on 64-quadrature amplitude modulation (64-QAM) and directly detected O-OFDM (DDO–OFDM) with an effective OFDM signal bandwidth of 24 GHz. Such a system can not only offer error-free (at bit error ratio of 10−3 without forward error correction) transmissions over the targeted maximum distance of 40 km of SMF but also achieves a power margin of 16 dB without any inline amplifier or dispersion compensation. This confirms that the proposed system has the potential to offer 100 Gb/s Ethernet for both point-to-point short communication links and 1:32 split passive optical networks (PONs). The bit rate of the system is then increased to 1 Tb/s employing WDM, and it is found to have equal potential for point-to-point short communication links and 1:16 split PON. Finally the reach limits of both of the proposed systems are quantified.

© 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
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

History
Original Manuscript: November 29, 2010
Revised Manuscript: March 3, 2011
Manuscript Accepted: March 21, 2011
Published: April 26, 2011

Citation
Lenin Mehedy, Masuduzzaman Bakaul, and Ampalavanapillai Nirmalathas, "Single-Channel Directly Detected Optical-OFDM Towards Higher Spectral Efficiency and Simplicity in 100 Gb/s Ethernet and Beyond," J. Opt. Commun. Netw. 3, 426-434 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-5-426

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