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Photonic Sensors

, Volume 8, Issue 3, pp 248–254 | Cite as

Porous Silicon Based Bragg-Grating Resonator for Refractive Index Biosensor

  • Sourabh Sahu
  • Jalil Ali
  • Preecha P. Yupapin
  • Ghanshyam Singh
Open Access
Regular
  • 141 Downloads

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.

Keywords

Biosensor evanescent field eigen mode 

Notes

Acknowledgment

The authors would like to acknowledge the mutual understanding for joint and collaborative work among researchers from Malaviya National Institute of Technology Jaipur (India), Universiti Teknologi Malaysia, Johor Bahru (Malaysia), and the Ton Duc Thang University, Ho Chi Minh City (Vietnam).

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Copyright information

© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Sourabh Sahu
    • 1
  • Jalil Ali
    • 2
  • Preecha P. Yupapin
    • 3
  • Ghanshyam Singh
    • 1
  1. 1.Department of Electronics and Communication EngineeringMalaviya National Institute of Technology JaipurJaipurIndia
  2. 2.Laser Centre, IBNU SINA ISIR and Faculty of ScienceUniversiti Teknologi MalaysiaJohor BahruMalaysia
  3. 3.Computational Optics Group, Advanced Institute of Material Science, and Faculty of Electrical & Electronics EngineeringTon Duc Thang UniversityHo Chi Minh CityVietnam

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