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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23428–23434

Entirely passive reach extended GPON using Raman amplification

Benyuan Zhu  »View Author Affiliations

Optics Express, Vol. 18, Issue 22, pp. 23428-23434 (2010)

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In previous investigation of extended GPON system, we employed 1240nm and 1427nm dual pumps within optical line terminal (OLT) equipments at central office (CO) to provide distributed Raman gains of upstream 1310nm and downstream 1490nm signals. These pump wavelengths were selected to ensure compatibility with the standard GPON wavelengths and reduce the unwanted pump-to-signal interactions. In this paper, we propose a new system scheme for an entirely-passive extended reach GPON to further enhance the system performance by eliminating the pump-to-signal interactions. In this scheme, a 1240 nm laser is employed to provide counter-pumping distributed Raman amplification of the upstream 1310nm signal, and a discrete Raman amplifier is integrated with the 1490nm transmitter to booster the downstream signal power and to improve the link loss budget. An operation over 60-km of zero-water-peak Allwave® fiber with a 1:128 way splitter is experimentally demonstrated at 2.5 Gbit/s. The system performance of such purely passive GPON extender is investigated in the paper. The system transmission limitation of upstream signal due to Raman ASE noises is discussed, and the non-linear impairment on downstream signal due to high launch power into feeder fiber is also examined.

© 2010 OSA

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

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 9, 2010
Revised Manuscript: September 29, 2010
Manuscript Accepted: September 29, 2010
Published: October 22, 2010

Benyuan Zhu, "Entirely passive reach extended GPON using Raman amplification," Opt. Express 18, 23428-23434 (2010)

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