10.30495/ijbbe.2023.699251

The Study of Plasmonic Biosensors based on Mach-Zehnder Interferometry

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  • Reza Kheradmand*1,
  • Tanin Kazemzadeh2,
  • Fariba Lotfi2,
  1. Faculty of Physics, University of Tabriz, Tabriz, Iran
  2. Faculty of Physics, University of Tabriz, Tabriz, Iran

Received: 2022-10-22

Accepted: 2023-01-21

Published in Issue 2022-10-01

Copyright (c) 2024 International Journal of Biophotonics and Biomedical Engineering

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Kheradmand, R., Kazemzadeh, T., & Lotfi, F. (2022). The Study of Plasmonic Biosensors based on Mach-Zehnder Interferometry. International Journal of Biophotonics and Biomedical Engineering (IJBBE), 2(1), 37-40. https://doi.org/10.30495/ijbbe.2023.699251
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Abstract

Fano resonance is a branch of surface plasmonics that has become a hot topic in sensing due to its asymmetric response spectrum, field enhancement effect and high sensitivity to refractive index (RI). In this research a plasmonic biosensor has been designed and simulated based on Mach-Zehnder interferometer. The simulations show that, the designed biosensor is able to detect changes of the RI of the surrounding media. The refractive indices (RIs) selected in this paper cover a wide range of RIs for biological samples. However, it is possible to accommodate media with RIs other than those in this specific range. The biosensor's sensing performance embedded in the sample has been tested in different conditions. Different frequencies can be achieved by changing the sample RI.

Keywords

  • Biosensor,
  • Fano Resonance,
  • Mach-Zehnder Interferometer,
  • Plasmonic,
  • Sensitivity,
  • Surface-Plasmon-polariton
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