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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 16418–16422

Wavelength remodulation scheme using DPSK downstream and upstream for DWDM-PONs

Nebras Deb and Hanan Anis  »View Author Affiliations

Optics Express, Vol. 19, Issue 17, pp. 16418-16422 (2011)

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We propose a novel wavelength-division-multiplexed passive optical network (WDM-PON) architecture with enhanced tolerance toward chromatic dispersion where a DPSK-modulated downstream signal with constant intensity is remodulated at the ONU side with a return to zero (RZ-DPSK). Driving the downstream modulator with a 50% RZ data enabled us to employ the pulse carver at the ONU for both removing downstream data and generating the optical RZ signal for upstream. This offers an attractive alternative to earlier proposed schemes as it allows us to use full modulation depth (FMD) and balanced detection for downstream data restoration. We experimentally demonstrate the system with both balanced and single-ended detection at 2.5Gb/s. Error-free operation has been achieved along a 20Km single mode fiber without dispersion compensation.

© 2011 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 20, 2011
Revised Manuscript: July 5, 2011
Manuscript Accepted: July 21, 2011
Published: August 11, 2011

Nebras Deb and Hanan Anis, "Wavelength remodulation scheme using DPSK downstream and upstream for DWDM-PONs," Opt. Express 19, 16418-16422 (2011)

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