Journal Article J. Opt. Soc. Am. B January 1, 2021

T Grating on Nano-Cavity Array based Refractive Index Sensor

Yasir Fatha Abed · Md Asif Hossain Bhuiyan · Sajid Muhaimin Choudhury
photonics
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Abstract

We report a refractive index sensor comprising of unique T grating on top of periodic nano-cavities. The sensor has two resonant modes sensitive to different regions of the structure with low inter-region interference, hence allows simultaneous detection of two different analytes or more accurate detection of a single analyte. The sensor also provides a self-referencing feature for a broad range of refractive index, from 1.3 to 1.5. Using the FDTD method, the sensitivities of 801.7 nm RIUtextsuperscript-1 and 1386.8 nm RIUtextsuperscript-1 have been recorded for the two modes respectively. The versatility of the structure makes the sensor a prominent candidate for biochemical and other sensing applications.

BibTeX

@article{J015,
 abstract = {We report a refractive index sensor comprising of unique T grating on top of periodic nano-cavities. The sensor has two resonant modes sensitive to different regions of the structure with low inter-region interference, hence allows simultaneous detection of two different analytes or more accurate detection of a single analyte. The sensor also provides a self-referencing feature for a broad range of refractive index, from 1.3 to 1.5. Using the FDTD method, the sensitivities of 801.7 nm RIU\textsuperscript-1 and 1386.8 nm RIU\textsuperscript-1 have been recorded for the two modes respectively. The versatility of the structure makes the sensor a prominent candidate for biochemical and other sensing applications.},
 author = {Yasir Fatha Abed and Md Asif Hossain Bhuiyan and me},
 citationnos = {1},
 citesurl = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=Fu8Hkb4AAAAJ&citation_for_view=Fu8Hkb4AAAAJ:HDshCWvjkbEC},
 doi = {10.1364/JOSAB.426526},
 jif = {2.18},
 journal = {J. Opt. Soc. Am. B},
 keywords = {photonics},
 number = {9},
 sjr = {Q2},
 title = {T Grating on Nano-Cavity Array based Refractive Index Sensor},
 volume = {39},
 year = {2021}
}