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Optics Letters

Optics Letters


  • Vol. 36, Iss. 1 — Jan. 1, 2011
  • pp: 91–93

Symmetrically glass-clad photonic crystal nanocavities with ultrahigh quality factors

Bong-Shik Song, Seung-Woo Jeon, and Susumu Noda  »View Author Affiliations

Optics Letters, Vol. 36, Issue 1, pp. 91-93 (2011)

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We design and fabricate ultra-high-quality (Q) photonic nanocavities in a symmetrically glass-clad silicon (Si) two-dimensional (2D) photonic crystal (PhC) structure. We theoretically investigate the dependence of the refractive index of the glass on the Q factors for asymmetric and symmetric structures. We show that the index-symmetric distribution of the glass is a critical factor to realize ultrahigh Q factors for glass-clad 2D PhC structures. We fabricate symmetrically glass-clad Si PhC nanocavities and achieve a record Q factor of 1 × 10 6 , comparable with the highest Q factors of nanocavities in air-bridge structures.

© 2011 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(230.5750) Optical devices : Resonators
(220.4241) Optical design and fabrication : Nanostructure fabrication
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: October 15, 2010
Revised Manuscript: November 13, 2010
Manuscript Accepted: December 5, 2010
Published: December 27, 2010

Bong-Shik Song, Seung-Woo Jeon, and Susumu Noda, "Symmetrically glass-clad photonic crystal nanocavities with ultrahigh quality factors," Opt. Lett. 36, 91-93 (2011)

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