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Microstructured and photonic bandgap fibers for applications in the resonant bio- and chemical sensors

Maksim Skorobogatiy

Article (2009)

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Cite this document: Skorobogatiy, M. (2009). Microstructured and photonic bandgap fibers for applications in the resonant bio- and chemical sensors. Journal of Sensors, 2009, p. 1-20. doi:10.1155/2009/524237
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Abstract

We review application of microstructured and photonic bandgap fibers for designing resonant optical sensors of changes in the value of analyte refractive index. This research subject has recently invoked much attention due to development of novel fiber types, as well as due to development of techniques for the activation of fiber microstructure with functional materials. Particularly, we consider two sensors types. The first sensor type employs hollow core photonic bandgap fibers where core guided mode is confined in the analyte filled core through resonant effect in the surrounding periodic reflector. The second sensor type employs metalized microstructured or photonic bandgap waveguides and fibers, where core guided mode is phase matched with a plasmon propagating at the fiber/analyte interface. In resonant sensors one typically employs fibers with strongly nonuniform spectral transmission characteristics that are sensitive to changes in the real part of the analyte refractive index. Moreover, if narrow absorption lines are present in the analyte transmission spectrum, due to Kramers-Kronig relation this will also result in strong variation in the real part of the refractive index in the vicinity of an absorption line. Therefore, resonant sensors allow detection of minute changes both in the real part of the analyte refractive index (10−6–10−4 RIU), as well as in the imaginary part of the analyte refractive index in the vicinity of absorption lines. In the following we detail various resonant sensor implementations, modes of operation, as well as analysis of sensitivities for some of the common transduction mechanisms for bio- and chemical sensing applications. Sensor designs considered in this review span spectral operation regions from the visible to terahertz.

Open Access document in PolyPublie
Subjects: 2500 Génie électrique et électronique > 2505 Dispositifs et réseaux photoniques
3100 Physique > 3100 Physique
Department: Département de génie physique
Research Center: Non applicable
Date Deposited: 17 Sep 2019 16:15
Last Modified: 18 Sep 2019 01:20
PolyPublie URL: https://publications.polymtl.ca/3657/
Document issued by the official publisher
Journal Title: Journal of Sensors (vol. 2009)
Publisher: Hindawi
Official URL: https://doi.org/10.1155/2009/524237

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