Surface-mode optical microcavities based on two-dimensional photonic crystals and silicon-on-insulator photonic crystals are studied. We demonstrate that a high-quality-factor microcavity can be easily realized in these structures. With an increasing of the cavity length, the quality factor is gradually enhanced and the resonant frequency converges to that of the corresponding surface mode in the photonic crystals. These structures have potential applications such as sensing.
© 2007 Optical Society of America
Original Manuscript: July 3, 2006
Revised Manuscript: October 27, 2006
Manuscript Accepted: December 15, 2006
Published: April 17, 2007
Sanshui Xiao and Min Qiu, "Optical microcavities based on surface modes in two-dimensional photonic crystals and silicon-on-insulator photonic crystals," J. Opt. Soc. Am. B 24, 1225-1229 (2007)