Optical Ring Resonators: A Platform for Biological Sensing Applications

Rapid advances in biochemistry and genetics lead to expansion of the various medical instruments for detection and prevention tasks. On the other hand, food safety is an important concern which relates to the public health. One of the most reliable tools to detect bioparticles ( ., DNA molecules and...

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Bibliographic Details
Published in:Journal of medical signals and sensors 2017-07, Vol.7 (3), p.185-191
Main Authors: Sarkaleh, Azadeh Kiani, Lahijani, Babak Vosoughi, Saberkari, Hamidreza, Esmaeeli, Ali
Format: Article
Language:English
Subjects:
Active layer
Analysis
Biosensors
DNA molecule
Food
Health aspects
optical resonators
Public health
sensitivity
Short Communication
Simulation methods
Supply and demand
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Summary:Rapid advances in biochemistry and genetics lead to expansion of the various medical instruments for detection and prevention tasks. On the other hand, food safety is an important concern which relates to the public health. One of the most reliable tools to detect bioparticles ( ., DNA molecules and proteins) and determining the authenticity of food products is the optical ring resonators. By depositing a recipient polymeric layer of target particle on the periphery of an optical ring resonator, it is possible to identify the existence of molecules by calculating the shift in the spectral response of the ring resonators. The main purpose of this paper is to investigate the performance of two structures of optical ring resonators, (i) all-pass and (ii) add-drop resonators for sensing applications. We propose a new configuration for sensing applications by introducing a nanogap in the all-pass ring resonator. The performance of these resonators is studied from sensing point of view. Simulation results, using finite difference time domain paradigm, revealed that the existence of a nanogap in the ring configuration achieves higher amount of sensitivity; thus, this structure is more suitable for biosensing applications.
ISSN:2228-7477
2228-7477
DOI:10.4103/jmss.JMSS_9_17