Design and Optimization of Horizontal Slot Microdisk Sensors

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We report on the results of numerical investigations into the effects of slot geometry of horizontal slot microdisk resonators on their performance as optical biosensors. We find that for resonator-based biosensors, the mode overlap is the limiting factor for the performance. With this finding, we suggest that slot resonators are superior to conventional, evanescent-field based resonators primarily for the surface sensing, where a high optical field created by the thin slots can be used. Possible mixing of modes reduces the mode overlap and thus need to be avoided by proper design of the resonator structure. We further propose an optimized triple-slot structure to double the possible detector sensitivity.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-10
Language
English
Article Type
Article
Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.25, no.19, pp.1859 - 1862

ISSN
1041-1135
DOI
10.1109/LPT.2013.2276421
URI
http://hdl.handle.net/10203/254464
Appears in Collection
NT-Journal Papers(저널논문)
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