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Proceedings Article

High-Q microcavities in 2D photonic crystal slabs studied by FDTD techniques and Pade approximation

[+] Author Affiliations
Min Qiu, Ziyang Zhang

Royal Institute of Technology (Sweden)

Proc. SPIE 5733, Photonic Crystal Materials and Devices III, 366 (April 13, 2005); doi:10.1117/12.589579
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From Conference Volume 5733

  • Photonic Crystal Materials and Devices III
  • San Jose, California, United States | January 22, 2005

abstract

A series of microcavities in 2D hexagonal lattice photonic crystal slabs (PCS’s) are studied. A combination of FDTD techniques and Pade approximation with Baker's algorithm is used to accurately determine the resonant frequencies and quality factors of the cavity modes simultaneously. Q factor larger than 106 is obtained for a one missing hole cavity. Another cavity with smaller and simpler design keeps Q factor larger than 105. Microcavities in silicon-on-insulator-type (SOI-type) PCS’s are also studied. Simulations show that Q factors of cavities in SOI-type PCS’s are much smaller than those in the membrane PCS’s. Deep etching of air holes is still required to obtain relatively high Q cavities in SOI-type PCS’s. © (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Min Qiu and Ziyang Zhang
" High-Q microcavities in 2D photonic crystal slabs studied by FDTD techniques and Pade approximation ", Proc. SPIE 5733, Photonic Crystal Materials and Devices III, 366 (April 13, 2005); doi:10.1117/12.589579; http://dx.doi.org/10.1117/12.589579


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