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Optics Letters

Optics Letters


  • Vol. 36, Iss. 19 — Oct. 1, 2011
  • pp: 3840–3842

Tuning of optical resonances in asymmetric microtube cavities

Libo Ma, Suwit Kiravittaya, Vladimir A. Bolaños Quiñones, Shilong Li, Yongfeng Mei, and Oliver G. Schmidt  »View Author Affiliations

Optics Letters, Vol. 36, Issue 19, pp. 3840-3842 (2011)

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We tune optical resonances in rolled-up SiO / SiO 2 microtube cavities by gradually modifying the tube structure through asymmetrical postdeposition of SiO 2 . Spectral blueshifts followed by redshifts of the resonant modes are observed in a thin-walled microtube (tube-I), which is attributed to a competition between shape deformation and effective increase of tube wall thickness. In contrast, only a monotonic redshift is detected when asymmetrical deposition is performed on a thick-walled microtube (tube-II). Distinct wavelength-dependent tuning was revealed in both kinds of tubes. Numerical calculations based on perturbation theory are carried out to explain and confirm the experimental results.

© 2011 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(230.5750) Optical devices : Resonators
(260.5740) Physical optics : Resonance
(140.3945) Lasers and laser optics : Microcavities
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Optical Devices

Original Manuscript: August 22, 2011
Manuscript Accepted: August 31, 2011
Published: September 26, 2011

Libo Ma, Suwit Kiravittaya, Vladimir A. Bolaños Quiñones, Shilong Li, Yongfeng Mei, and Oliver G. Schmidt, "Tuning of optical resonances in asymmetric microtube cavities," Opt. Lett. 36, 3840-3842 (2011)

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