Cross-sectional optimization of whispering-gallery mode sensor with high electric field intensity in the detection domain

IEEE Journal of Selected Topics in Quantum Electronics Volume 20 Issue 6 Page 1-10 published_at 2014-05-05
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Title ( eng )
Cross-sectional optimization of whispering-gallery mode sensor with high electric field intensity in the detection domain
Creator
Haraguchi Masanobu
Okamoto Toshihiro
Source Title
IEEE Journal of Selected Topics in Quantum Electronics
Volume 20
Issue 6
Start Page 1
End Page 10
Abstract
Optimal cross-sectional shapes for whisperinggallery mode sensors with prescribed emission wavelengths and resonance modes are generated through topology optimization based on the finite element method. The sensor is assumed to detect the state of the domain surrounded by the sensor. We identified the integral of the square of the electric field intensity over the detection domain and the quality factor (Q factor), which should be maximized, as key values for the sensor sensitivity, representing the detection limit for the relative permittivity change of the test object. Based on this, the integral of the square of the electric field intensity over the detection domain and the Q factor are studied as the optimization targets. In our numerical study, their optimal configuration characteristics are identified and analyzed. The resulting device has a small radius, a small detection domain and a concave shape with a center located next to the detection domain. We also succeeded in performing simultaneous optimization of the integral of the square of the electric field intensity over the detection domain and the Q factor.
NDC
Electrical engineering [ 540 ]
Language
eng
Resource Type journal article
Publisher
IEEE
Date of Issued 2014-05-05
Rights
(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 1077-260X
[DOI] 10.1109/JSTQE.2014.2321732
[NCID] AA11036333
[DOI] http://dx.doi.org/10.1109/JSTQE.2014.2321732