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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5807–5814

Maximization of net optical gain in silicon-waveguide Raman amplifiers

Ivan D. Rukhlenko, Chethiya Dissanayake, Malin Premaratne, and Govind P. Agrawal  »View Author Affiliations

Optics Express, Vol. 17, Issue 7, pp. 5807-5814 (2009)

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We present a novel method for maximizing signal gain in continuously pumped silicon-waveguide Raman amplifiers made with silicon-on-insulator technology. Our method allows for pump-power depletion during Raman amplification and makes use of a variational technique. Its use leads to a system of four coupled nonlinear differential equations, whose numerical solution provides the optimal axial profile of the effective mode area along the waveguide length that maximizes the output signal power for a given amplifier length and a preset input (or output) cross-section area. In practice, the optimum profile can be realized by varying the cross-section area of a silicon waveguide along its length by tapering its width appropriately.

© 2009 Optical Society of America

OCIS Codes
(230.4320) Optical devices : Nonlinear optical devices
(230.7370) Optical devices : Waveguides
(250.4390) Optoelectronics : Nonlinear optics, integrated optics
(230.4480) Optical devices : Optical amplifiers
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:

Original Manuscript: December 23, 2008
Revised Manuscript: March 20, 2009
Manuscript Accepted: March 24, 2009
Published: March 26, 2009

Ivan D. Rukhlenko, Chethiya Dissanayake, Malin Premaratne, and Govind P. Agrawal, "Maximization of net optical gain in silicon-waveguide Raman amplifiers," Opt. Express 17, 5807-5814 (2009)

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