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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 17, Iss. 5 — Oct. 1, 2013
  • pp: 433–440

Evaluation of Chromatic-Dispersion-Dependent Four-Wave-Mixing Efficiency in Hydrogenated Amorphous Silicon Waveguides

Dong Wook Kim, Heung Sun Jeong, Sang Chul Jeon, Sang Hyun Park, Dong Eun Yoo, Ki Nam Kim, Shin Mo An, El-Hang Lee, and Kyong Hon Kim  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 17, Issue 5, pp. 433-440 (2013)


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Abstract

We present an experimental and numerical study of spectral profiles of effective group indices of hydrogenated amorphous silicon (a-Si:H) waveguides and of their chromatic-dispersion effect on the four-wave-mixing (FWM) signal generation. The a-Si:H waveguides of 220-nm thickness and three different widths of 400, 450 and 500 nm were fabricated by using the conventional CMOS device processes on a <TEX>$2-{\mu}m$</TEX> thick <TEX>$SiO_2$</TEX> bottom layer deposited on 8-inch Si wafers. Mach-Zehnder interferometers (MZIs) were formed with the a-Si:H waveguides, and used for precise measurement of the effective group indices and thus for determination of the spectral profile of the waveguides' chromatic dispersion. The wavelength ranges for the FWM-signal generation were about 45, 75 and 55 nm for the 400-, 450- and 500-nm-wide waveguides, respectively, at the pump wavelength of 1532 nm. A widest wavelength range for the efficient FWM process was observed with the 450-nm-wide waveguide having a zero-dispersion near the pump wavelength.

© 2013 Optical Society of Korea

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(230.7370) Optical devices : Waveguides

History
Original Manuscript: August 2, 2013
Revised Manuscript: September 27, 2013
Manuscript Accepted: September 30, 2013
Published: October 25, 2013

Citation
Dong Wook Kim, Heung Sun Jeong, Sang Chul Jeon, Sang Hyun Park, Dong Eun Yoo, Ki Nam Kim, Shin Mo An, El-Hang Lee, and Kyong Hon Kim, "Evaluation of Chromatic-Dispersion-Dependent Four-Wave-Mixing Efficiency in Hydrogenated Amorphous Silicon Waveguides," J. Opt. Soc. Korea 17, 433-440 (2013)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-17-5-433


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