Letter abstract


Nature Photonics 2, 35 - 38 (2008)
Published online: 9 December 2007 | doi:10.1038/nphoton.2007.249

Subject Categories: Fundamental optical physics | Fibre optics and optical communications

Signal regeneration using low-power four-wave mixing on silicon chip

Reza Salem1, Mark A. Foster1, Amy C. Turner2, David F. Geraghty1, Michal Lipson2 & Alexander L. Gaeta1


To meet the increasing demand for higher capacity in optical communications, signal transmission at higher modulation rates and over a broader wavelength range will be required. Signal degradation in the optical channel caused by dispersion, nonlinearity and noise becomes a critical issue as data rates increase. Thus, it is highly desirable to develop broadband, high-speed regeneration devices1. Recent advances in silicon-on-insulator photonic devices offer the potential for highly integrated, robust opto–electronic architectures, and optical processes such as amplification2, 3, 4, wavelength conversion5, 6, 7 and amplitude modulation8, 9 have already been demonstrated in such structures. In this work, we demonstrate two regeneration schemes using low-power four-wave mixing in a silicon nanowaveguide and compensate for the effects of poor extinction ratio, dispersive broadening and timing jitter. This capability further expands the range of optical functions that can be incorporated into silicon-compatible photonic devices offering a broadband and integrated solution for regeneration.

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  1. School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
  2. School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA

Correspondence to: Alexander L. Gaeta1 e-mail: alg3@cornell.edu



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