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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 27981–27991

Combined utilization of partial-response coding and equalization for high-speed WDM-PON with centralized lightwaves

Qi Guo and An V. Tran  »View Author Affiliations

Optics Express, Vol. 20, Issue 27, pp. 27981-27991 (2012)

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In this paper, we investigate the transmission impairments in a high-speed single-feeder wavelength-division-multiplexed passive optical network (WDM-PON) employing low-bandwidth upstream transmitter. A 1-GHz reflective semiconductor optical amplifier (RSOA) is operated at the rates of 10 Gb/s and 20 Gb/s in the proposed WDM-PON. Since the system performance is seriously limited by its uplink in both capacity and reach owing to inter-symbol interference and reflection noise, we present a novel technique with simultaneous capability of spectral efficiency enhancement and transmission distance extension in the uplink via coding and equalization that exploit the principles of partial-response (PR) signal. It is experimentally demonstrated that the proposed system supports the delivery of 10 Gb/s and 20 Gb/s upstream signals over 75-km and 25-km bidirectional fiber, respectively. The configuration of PR equalizer is optimized for its best performance-complexity trade-off. The reflection tolerance of 10 Gb/s and 20 Gb/s channels is improved by 8 dB and 6 dB, respectively, with PR coding. The proposed cost-effective signal processing scheme has great potential for the next-generation access networks.

© 2012 OSA

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 27, 2012
Revised Manuscript: October 12, 2012
Manuscript Accepted: October 12, 2012
Published: December 3, 2012

Qi Guo and An V. Tran, "Combined utilization of partial-response coding and equalization for high-speed WDM-PON with centralized lightwaves," Opt. Express 20, 27981-27991 (2012)

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