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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 4447–4455

Baud-rate flexible clock recovery and channel identification in OTDM realized by pulse position modulation

Takayuki Kurosu, Ken Tanizawa, Dexiang Wang, Sze Yun Set, and Shu Namiki  »View Author Affiliations

Optics Express, Vol. 21, Issue 4, pp. 4447-4455 (2013)

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We propose a novel scheme of OTDM utilizing pulse position modulation, where optical null headers (ONH) are inserted between the signal pulses periodically to allow channel identification. The ONH also achieves in-band clock distribution through the generation of high contrast pilot tone on the signal power spectra, enabling baud-rate flexible clock recovery. Using the novel scheme, clock recovery with a timing jitter of less than 200 fs is achieved at different baud rates up to 344 Gbaud. We demonstrate stable clock recovery with channel identification in 344-Gb/s OTDM transmissions over dispersion managed 3-km SMF.

© 2013 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4230) Fiber optics and optical communications : Multiplexing
(060.4510) Fiber optics and optical communications : Optical communications
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 22, 2012
Revised Manuscript: January 27, 2013
Manuscript Accepted: February 7, 2013
Published: February 13, 2013

Takayuki Kurosu, Ken Tanizawa, Dexiang Wang, Sze Yun Set, and Shu Namiki, "Baud-rate flexible clock recovery and channel identification in OTDM realized by pulse position modulation," Opt. Express 21, 4447-4455 (2013)

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