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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 5 — Mar. 2, 2009
  • pp: 3964–3969

Simultaneous multiple DWDM channel NRZ-to-RZ regenerative format conversion at 10 and 20 Gb/s

Yu Yu, Xinliang Zhang, Jose B. Rosas-Fernández, Dexiu Huang, Richard V. Pemty, and Ian H. White  »View Author Affiliations

Optics Express, Vol. 17, Issue 5, pp. 3964-3969 (2009)

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We propose and demonstrate simultaneous optoelectronic NRZ-to-RZ format conversion for multiple DWDM channels with some regenerative properties, using a single phase modulator (PM) and a fibre delay-interferometer (DI). In order to accommodate multiple DWDM channels, the DI is designed to have a free spectral range (FSR) equal to the channel spacing. This thus extracts the chirp induced by the phase modulation for all the channels at the same time. Since the original carriers are suppressed to some extent, the NRZ-to-RZ conversions can be achieved with partial regeneration. Multi-channel format conversion is successfully demonstrated for 16 channels at 10 Gb/s and 8 channels at 20 Gb/s, with a channel spacing of 100GHz. Bit error ratio (BER) measurements at 10Gb/s show 3.5 and 4.2 dB penalty improvements for 50 and 75km transmission without dispersion compensation, respectively. Significant extinction ratio (ER) improvement and timing jitter reduction is observed for the converted channels.

© 2009 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation
(070.4560) Fourier optics and signal processing : Data processing by optical means

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 15, 2008
Revised Manuscript: January 19, 2009
Manuscript Accepted: February 8, 2009
Published: February 27, 2009

Yu Yu, Xinliang Zhang, Jose B. Rosas-Fernández, Dexiu Huang, Richard V. Penty, and Ian H. White, "Simultaneous multiple DWDM channel NRZ-to-RZ regenerative format conversion at 10 and 20 Gb/s," Opt. Express 17, 3964-3969 (2009)

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