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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 24 — Nov. 19, 2012
  • pp: 26285–26291

Radially graded index whispering gallery mode resonator for penetration enhancement

Di Zhu, Yanyan Zhou, Xia Yu, Ping Shum, and Feng Luan  »View Author Affiliations

Optics Express, Vol. 20, Issue 24, pp. 26285-26291 (2012)

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This paper theoretically analyzes a hollow cylindrical whispering gallery mode resonator with radially inhomogeneous cladding. We propose an index profile of n(r) = b/r to enhance field penetration towards the resonator core. With such index profile, externally coupled evanescent wave can easily penetrate the resonator cladding without any potential barrier.

© 2012 OSA

OCIS Codes
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(070.5753) Fourier optics and signal processing : Resonators

ToC Category:
Optical Devices

Original Manuscript: October 19, 2012
Revised Manuscript: October 29, 2012
Manuscript Accepted: October 29, 2012
Published: November 6, 2012

Di Zhu, Yanyan Zhou, Xia Yu, Ping Shum, and Feng Luan, "Radially graded index whispering gallery mode resonator for penetration enhancement," Opt. Express 20, 26285-26291 (2012)

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