Universiti Teknologi Malaysia Institutional Repository

Porous silicon based Bragg-grating resonator for refractive index biosensor

Sahu, S. and Ali, J. and Yupapin, P. P. and Singh, G. (2018) Porous silicon based Bragg-grating resonator for refractive index biosensor. Photonic Sensors, 8 (3). pp. 248-254. ISSN 1674-9251

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Official URL: http://dx.doi.org/10.1007/s13320-018-0459-z

Abstract

In this work, we have evaluated the biosensing capability of the porous silicon (PSi) based sidewall Bragg-grating resonator. The approximation of the quasi-TE mode full vector for the eigenmode calculation is performed using a full vector mode solver. The transmission spectra of the device are evaluated using the transfer matrix method. We have observed a shift in the resonant band for a change in the refractive index of biomaterial in the upper cladding region. The theoretical value of the bulk sensitivity is calculated to be 387.48 nm/RIU. The device is suitable for biosensing application due to its ability of interacting signal with the infiltrated analytes in the PSi waveguide core.

Item Type:Article
Uncontrolled Keywords:Biosensor, eigen mode, evanescent field
Subjects:Q Science > QC Physics
Divisions:Science
ID Code:79676
Deposited By: Fazli Masari
Deposited On:28 Jan 2019 12:58
Last Modified:28 Jan 2019 12:58

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