Tapered photonic crystal microcavities embedded in photonic wire waveguides with large resonance quality-factor and high transmission

Zain, A.R.M., Gnan, M., Chong, H.M.H., Sorel, M. and De La Rue, R.M. (2008) Tapered photonic crystal microcavities embedded in photonic wire waveguides with large resonance quality-factor and high transmission. IEEE Photonics Technology Letters, 20(1), pp. 6-8. (doi:10.1109/LPT.2007.910621)

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Publisher's URL: http://dx.doi.org/10.1109/LPT.2007.910621

Abstract

We present the design, fabrication, and characterization of a microcavity that exhibits simultaneously high transmission and large resonance quality-factor (Q-factor). This microcavity is formed by a single-row photonic crystal (PhC) embedded in a 500-nm-wide photonic wire waveguide - and is based on silicon-on-insulator. A normalized transmission of 85%, together with a Q-factor of 18 500, have been achieved experimentally through the use of carefully designed tapering on both sides of each of the hole-type PhC mirrors that form the microcavity. We have also demonstrated reasonably accurate control of the cavity resonance frequency. Simulation of the device using a three-dimensional finite-difference time-domain approach shows good agreement with the experimental results.

Item Type:Articles
Keywords:Microcavities, photonic crystal (PhC), photonic wires (PhWs), quality-factor (SQS-factor), silicon-on-insulator (SOI)
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and De La Rue, Professor Richard
Authors: Zain, A.R.M., Gnan, M., Chong, H.M.H., Sorel, M., and De La Rue, R.M.
Subjects:T Technology > T Technology (General)
Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Photonics Technology Letters
Publisher:IEEE
ISSN:1041-1135
Copyright Holders:Copyright © 2008 IEEE
First Published:First published in IEEE Photonics Technology letters 20(1):6-8
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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