Md Zain, A.R., Chong, H.M.H., Johnson, N. and De La Rue, R.M. (2008) Fine tuning of single row photonic crystal extended cavities embedded in photonic wire waveguides. In: Krolikowski, W.Z., Soukoulis, C.M., Lam, P.K., Davis, T.J., Fan, S. and Kivshar, Y.S. (eds.) Photonics: Design, Technology, and Packaging III. Series: Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) (6801). SPIE: Bellingham, WA, U8010-U8010. ISBN 9780819469724
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Abstract
This paper describes the realization of high quality factor (Q-factor) single row photonic crystal extended cavity structures embedded in 500 nm wide photonic wire waveguides. Cavities spacer lengths of between 2 pm and 9 gin have been inserted between two periodic mirrors with aperiodic tapering of the hole diameter and the spacing between holes. A Q-factor value of approximately 74,000 has been measured for a 5 pm long cavity at a selected resonance frequency. We have also demonstrated experimentally a tuning capability for the resonance frequency by means of small variations of the cavity length. A shift of approximately 10 nm in resonance frequency has been obtained for a 250 nm variation of the cavity length, both in simulation and in measured results. In addition, a free spectral range (FSR) in resonance frequency of between 20 nm and 30 nm has also been demonstrated for a small variation in the mirror hole diameter of approximately 20 nm. Tapering within and outside the cavity has produced a substantial increase in both the Q-factor and the optical transmission at resonance. Both 2D and 3D finite-difference time-domain (FDTD) computations have been used to simulate the device structures. Comparisons between the simulation and measured results show reasonably good agreement
Item Type: | Book Sections |
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Additional Information: | Conference on Photonics: Design, Technology, and Packaging III, Canberra, AUSTRALIA, DEC 05-07, 2007 Series ISSN: 0277-786X |
Keywords: | Branches, cavity, device, extended cavity, microcavities, optics, photonic crystal, photonic integrated optics, photonic wires, q-factor, quality-factor, silicon-on-insulator, system, systems |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Johnson, Dr Nigel and Chong, Dr Harold and De La Rue, Professor Richard and md zain, mr ahmad rifqi |
Authors: | Md Zain, A.R., Chong, H.M.H., Johnson, N., and De La Rue, R.M. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Photonics: Design, Technology, and Packaging III |
Publisher: | SPIE |
ISSN: | 0277-786X |
ISBN: | 9780819469724 |
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