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Optics Express

Optics Express

  • Editor: Martijn de Sterke
  • Vol. 16, Iss. 20 — Sep. 29, 2008
  • pp: 15325–15331

All-optical regenerative NRZ-to-RZ format conversion using coupled ring-resonator optical waveguide

Tong Ye, Cishuo Yan, Yuanyuan Lu, Fangfei Liu, and Yikai Su  »View Author Affiliations

Optics Express, Vol. 16, Issue 20, pp. 15325-15331 (2008)

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This paper proposes a scheme for format conversion from a distorted non-return-to-zero (NRZ) signal to a high-quality return-to-zero (RZ) signal, using the nonlinearity in a coupled ring-resonator optical waveguide (CROW) on a silicon chip. In this method, a distorted NRZ signal is amplified and fed into the CROW together with an RZ pulse train. The CROW performs as a nonlinear step gate for the RZ pulse train, which outputs amplitude-equalized RZ pulses inheriting the information from the NRZ signal. Clearly, the integration of the format conversion and regeneration simplifies the system. Our simulations performed at 10 Gb/s and 40 Gb/s verify the feasibility of our proposal.

© 2008 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(230.1150) Optical devices : All-optical devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 16, 2008
Revised Manuscript: July 4, 2008
Manuscript Accepted: July 9, 2008
Published: September 15, 2008

Tong Ye, Cishuo Yan, Yuanyuan Lu, Fengfei Liu, and Yikai Su, "All-optical regenerative NRZ-to-RZ format conversion using coupled ring-resonator optical waveguide," Opt. Express 16, 15325-15331 (2008)

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