Optical Cherenkov radiation in an As2S3 slot waveguide with four zero-dispersion wavelengths

Shaofei Wang, Jungao Hu, Hairun Guo, Xianglong Zeng

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Abstract

We propose an approach for an efficient generation of optical Cherenkov radiation (OCR) in the near-infrared by tailoring the waveguide dispersion for a zero group-velocity mismatching between the radiation and the pump soliton. Based on an As2S3 slot waveguide with subwavelength dimensions, dispersion profiles with four zero dispersion wavelengths are found to produce a phase-matching nonlinear process leading to a broadband resonant radiation. The broadband OCR investigated in the chalcogenide waveguide may find applications in on-chip wavelength conversion and near-infrared pulse generation.
Original languageEnglish
JournalOptics Express
Volume21
Issue number3
Pages (from-to)3067-3072
ISSN1094-4087
DOIs
Publication statusPublished - 2013

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-3-3067. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Keywords

  • Dispersion (waves)
  • Dispersions
  • Infrared devices
  • Pulse generators
  • Radiation
  • Solitons
  • Waveguides

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