FDTD modeling in the design of optical chemical sensor structures

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Publication Type Journal Article
School or College College of Engineering
Department Bioengineering
Creator Christensen, Douglas A.
Other Author Kimmel, Jyrki S.
Title FDTD modeling in the design of optical chemical sensor structures
Date 1991
Description The finite-difference time-domain method (FDTD) is a numerical technique for solving Maxwell's equations in a discretized space and time frame. It has been used extensively in the analysis of electrically large structures in the microwave domain, but has only recently been applied to optical problems. Because of memory limitations of computers used, the method is generally restricted to configurations which extend to the order of tens of wavelengths in three dimensions, or hundreds of wavelengths in two dimensions. Optical sensor structures, however, are of suitable size to be modeled with FDTD, and the advantages of the technique become pronounced especially in the design of chemical sensors which employ evanescence or near-field effects. Among these is the possibility to incorporate the molecular distribution of the analyte on the sensing surface as well as the optical characteristics of the sensor in the optical model. Although the computer resources required for arbitrary structures in three dimensions can limit the scope of analyses, it is relatively simple to use symmetry properties of the structures to relax these requirements. In addition, for planar structures, two-dimensional models are adequate for studying many aspects of sensor design. We have applied FDTD to the analysis of excitation and emission as well as to optimization of the design of planar waveguide fluorescence sensors.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Volume 91
First Page 924
Last Page 926
DOI 10.1109/SENSOR.1991.149039
Subject Finite-difference time-domain method; Immunochemical fluorosensors; Planar waveguides
Subject LCSH Time-domain analysis; Optical detectors; Wave guides; Electric fields
Language eng
Conference Title TRANSDUCERS '91: 1991 International Conference on Solid-State Sensors and Actuators. Digest of Technical Papers; 24-27 June 1991; San Francisco, CA, USA
Bibliographic Citation Kimmel, J. S., & Christensen, D. A. (1991). FDTD modeling in the design of optical chemical sensor structures. Transducers, 91, 924-6.
Rights Management (c) 1991 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. http://dx.doi.org/10.1109/SENSOR.1991.149039
Format Medium application/pdf
Format Extent 368,711 bytes
Identifier ir-main,11680
ARK ark:/87278/s6kh15k1
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-12-04
ID 704024
Reference URL https://collections.lib.utah.edu/ark:/87278/s6kh15k1
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