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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 7 — Jul. 1, 2010
  • pp: 1425–1429

Enhanced photonic bandgap in ion-implanted lithium niobate waveguides by improving index contrast

Ziyou Zhou, Xiaoyue Huang, Raghav Rao Vanga, and Zhuoyuan Wu  »View Author Affiliations

JOSA B, Vol. 27, Issue 7, pp. 1425-1429 (2010)

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We report on utilizing focused ion beam milling and selective wet-etching techniques to enlarge the optical barrier in helium ion-implanted lithium niobate single crystals. We realized a high-efficiency narrow-bandwidth photonic band filter by introducing an air cavity as the optical barrier on a waveguide portion. The air cavity was created beneath the Bragg gratings (1-D photonic crystals) to strengthen the light confinement and optical response. The experimental performance of photonic crystals with and without air cavity is presented and compared with the theoretical modeling. These photonic crystal devices with high refractive-index contrast make a further step towards ultracompact optical circuit integration and applications based on single crystals.

© 2010 Optical Society of America

OCIS Codes
(130.3730) Integrated optics : Lithium niobate
(230.7370) Optical devices : Waveguides
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

Original Manuscript: December 24, 2009
Revised Manuscript: April 14, 2010
Manuscript Accepted: April 28, 2010
Published: June 18, 2010

Ziyou Zhou, Xiaoyue Huang, Raghav Rao Vanga, and Zhuoyuan Wu, "Enhanced photonic bandgap in ion-implanted lithium niobate waveguides by improving index contrast," J. Opt. Soc. Am. B 27, 1425-1429 (2010)

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