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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 7 — Mar. 26, 2012
  • pp: 8071–8077

Energy-efficient WDM-OFDM-PON employing shared OFDM modulation modules in optical line terminal

Xiaofeng Hu, Liang Zhang, Pan Cao, Kongtao Wang, and Yikai Su  »View Author Affiliations


Optics Express, Vol. 20, Issue 7, pp. 8071-8077 (2012)
http://dx.doi.org/10.1364/OE.20.008071


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Abstract

We propose and experimentally demonstrate a scheme to improve the energy efficiency of wavelength division multiplexing - orthogonal frequency division multiplexing - passive optical networks (WDM-OFDM-PONs). By using an N × M opto-mechanic switch in optical line terminal (OLT), an OFDM modulation module is shared by several channels to deliver data to multiple users with low traffic demands during non-peak hours of the day, thus greatly reducing the number of operating devices and minimizing the energy consumption of the OLT. An experiment utilizing one OFDM modulation module to serve three optical network units (ONUs) in a WDM-OFDM-PON is performed to verify the feasibility of our proposal. Theoretical analysis and numerical calculation show that the proposed scheme can achieve a saving of 23.6% in the energy consumption of the OFDM modulation modules compared to conventional WDM-OFDM-PON.

© 2012 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 19, 2012
Revised Manuscript: February 24, 2012
Manuscript Accepted: February 28, 2012
Published: March 22, 2012

Citation
Xiaofeng Hu, Liang Zhang, Pan Cao, Kongtao Wang, and Yikai Su, "Energy-efficient WDM-OFDM-PON employing shared OFDM modulation modules in optical line terminal," Opt. Express 20, 8071-8077 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-7-8071


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