High sensitivity and low detection limit sensor based on a slotted nanobeam cavity

Authors

  • Mohannad Al-Hmoud Imam Mohammad ibn Saud Islamic University (IMSIU), P.O. Box 90950, Riyadh 11623, Saudi Arabia
  • Rasha Alyahyan

DOI:

https://doi.org/10.4302/plp.v14i3.1161

Keywords:

High Q cavities, Photonic crystal cavities, sensors

Abstract

In this work, the three-dimensional finite-difference time-domain (3D-FDTD) method is used to design and analyze a refractive index sensor based on a slotted photonic crystal nanobeam cavity. These type of cavities support a high quality-factor and a small volume, and therefore is attractive for optical sensing. We demonstrate that when immersing our proposed sensor in water it can possess a high-quality factor of 2.0×10^6, high sensitivity of 325 nm/RIU, and a detection limit of 2.4×10^(-7) RIU. We believe that our proposed sensor is a promising candidate for potential applications sensing like in optofluidic- and bio-sensing.

Full Text: PDF

References
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Author Biography

Mohannad Al-Hmoud, Imam Mohammad ibn Saud Islamic University (IMSIU), P.O. Box 90950, Riyadh 11623, Saudi Arabia

Assistant Professor at department of physics, 

Imam Mohammad ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia

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Published

2022-09-30

How to Cite

[1]
M. Al-Hmoud and R. Alyahyan, “High sensitivity and low detection limit sensor based on a slotted nanobeam cavity”, Photonics Lett. Pol., vol. 14, no. 3, pp. 59–61, Sep. 2022.

Issue

Vol. 14 No. 3 (2022)

Section

Articles

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