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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 23 — Nov. 12, 2007
  • pp: 15080–15085

Simultaneous demonstration on all-optical digital encoder and comparator at 40 Gb/s with semiconductor optical amplifiers

Yang Wang, Xinliang Zhang, Jianji Dong, and Dexiu Huang  »View Author Affiliations

Optics Express, Vol. 15, Issue 23, pp. 15080-15085 (2007)

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We proposed and experimental demonstrated all-optical two line-four line encoder and two bit-wise comparator of RZ data streams at 40Gb/s based on cross gain modulation (XGM) and four wave mixing (FWM) in three parallel SOAs. Five logic functions for digital encoder and comparator between two signals A and B: A̅ · B̅, A̅B, A̅B, AB and AB, were achieved simultaneously. The first three optical logics are realized based on XGM in SOAs, the fourth is realized with FWM, and the fifth is the mixing result of the first and the fourth. A detuning filter is employed to improve the output performance. The output extinction ratio (ER) for the XGM operation is above 10dB, and the ER for FWM operation is around 8 dB. Wide and clear eye patterns for the five logic outputs can be observed.

© 2007 Optical Society of America

OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(200.3760) Optics in computing : Logic-based optical processing
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Optics in Computing

Original Manuscript: July 9, 2007
Revised Manuscript: October 14, 2007
Manuscript Accepted: October 17, 2007
Published: October 31, 2007

Yang Wang, Xinliang Zhang, Jianji Dong, and Dexiu Huang, "Simultaneous demonstration on all-optical digital encoder and comparator at 40 Gb/s with semiconductor optical amplifiers," Opt. Express 15, 15080-15085 (2007)

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