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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 5 — Mar. 1, 2010
  • pp: 5328–5337

Engineered multiwavelength conversion using nonperiodic optical superlattice optimized by genetic algorithm

Jui-Yu Lai, Yi-Jhen Liu, Hung-Yu Wu, Yen-Hung Chen, and Shang-Da Yang  »View Author Affiliations

Optics Express, Vol. 18, Issue 5, pp. 5328-5337 (2010)

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We propose and experimentally demonstrate a new scheme for flexible multiwavelength conversion that uses the genetic algorithm with two target functions to optimize the nonperiodic optical superlattice (NOS). Compared to the widely used aperiodic optical superlattice approach, our scheme can achieve ~15% higher overall conversion efficiency, better spectral fidelity, and allows for further improvement of the performances if a larger genetic pool is used. Numerical analysis also shows that the resulting conversion efficiency spectrum is rather insensitive to typical fabrication errors, and is distorted under pump depletion in a similar scale as that of a periodic quasi-phase matching grating. Experimentally measured conversion efficiency spectra of the two fabricated NOS devices are in good agreement with the target curves.

© 2010 OSA

OCIS Codes
(160.3730) Materials : Lithium niobate
(230.4320) Optical devices : Nonlinear optical devices
(230.7405) Optical devices : Wavelength conversion devices

ToC Category:
Optical Devices

Original Manuscript: January 19, 2010
Revised Manuscript: February 24, 2010
Manuscript Accepted: February 24, 2010
Published: February 26, 2010

Jui-Yu Lai, Yi-Jhen Liu, Hung-Yu Wu, Yen-Hung Chen, and Shang-Da Yang, "Engineered multiwavelength conversion using nonperiodic optical superlattice optimized by genetic algorithm," Opt. Express 18, 5328-5337 (2010)

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