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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 6 — Jun. 1, 2006
  • pp: 1068–1073

Investigation of mode characteristics for microdisk resonators by S-matrix and three-dimensional finite-difference time-domain technique

Xian-Shu Luo, Yong-Zhen Huang, Wei-Hua Guo, Qin Chen, Miao-Qing Wang, and Li-Juan Yu  »View Author Affiliations


JOSA B, Vol. 23, Issue 6, pp. 1068-1073 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001068


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Abstract

The mode characteristics of a three-dimensional (3D) microdisk with a vertical refractive index distribution of n 2 3.4 n 2 are investigated by the S-matrix method and 3D finite-difference time-domain (FDTD) technique. For the microdisk with a thickness of 0.2 μ m and a radius of 1 μ m , the mode wavelengths and quality factors for the HE 7 , 1 mode obtained by 3D FDTD simulation and the S-matrix method are in good agreement as n 2 increases from 1.0 to 2.6. But the Q factor obtained by the 3D FDTD rapidly decreases from 1.12 × 10 4 to 379 as n 2 increases from 2.65 to 2.8 owing to the vertical radiation losses, which cannot be predicted by the proposed S-matrix method. The comparisons also show that quality factors obtained from the analytical solution of two-dimensional microdisks under the effective index approximation are five to seven times smaller than those of the 3D FDTD as n 2 = 1 and R = 1 μ m .

© 2006 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3410) Lasers and laser optics : Laser resonators
(140.4780) Lasers and laser optics : Optical resonators
(240.0240) Optics at surfaces : Optics at surfaces
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 24, 2005
Revised Manuscript: December 6, 2005
Manuscript Accepted: December 29, 2005

Citation
Xian-Shu Luo, Yong-Zhen Huang, Wei-Hua Guo, Qin Chen, Miao-Qing Wang, and Li-Juan Yu, "Investigation of mode characteristics for microdisk resonators by S-matrix and three-dimensional finite-difference time-domain technique," J. Opt. Soc. Am. B 23, 1068-1073 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-6-1068

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