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Optics Express

Optics Express

  • Vol. 16, Iss. 16 — Aug. 4, 2008
  • pp: 12096–12101

WDM extended reach passive optical networks using OFDM-QAM

Chi-Wai Chow, Chien-Hung Yeh, Chia-Hsuan Wang, Fu-Yuan Shih, Ci-Ling Pan, and Sien Chi  »View Author Affiliations


Optics Express, Vol. 16, Issue 16, pp. 12096-12101 (2008)
http://dx.doi.org/10.1364/OE.16.012096


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Abstract

In order to reduce the cost for delivering future broadband services, network operators are inclined to simplify the network architectures by integrating the metro and access networks into a single system. Hence, extended reach passive optical networks (ER-PONs) have been proposed. ER-PON usually has four new features: high data rate in both upstream and downstream signals (>1 Gb/s); reach extension to >100 km; a high split ratio (>100); and using wavelength division multiplexing (WDM). In this work, we propose and demonstrate a highly spectral efficient ER-PON using 4 Gb/s OFDM-QAM for both upstream and downstream signals, while achieving a high split-ratio of 256. The ER-PON employs optical components optimized for GPON (bandwidth of ∼1GHz) and reaches 100 km without dispersion compensation. Numerical analysis using 16, 64 and 256-QAM OFDM are also performed to study the back-to-back receiver sensitivities and power penalties at different electrical driving ratios.

© 2008 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 12, 2008
Revised Manuscript: June 19, 2008
Manuscript Accepted: June 23, 2008
Published: July 28, 2008

Citation
Chi-Wai Chow, Chien-Hung Yeh, Chia-Hsuan Wang, Fu-Yuan Shih, Ci-Ling Pan, and Sien Chi, "WDM extended reach passive optical networks using OFDM-QAM," Opt. Express 16, 12096-12101 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-16-12096


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References

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