Dual-polarized highly sensitive surface-plasmon-resonance-based chemical and biomolecular sensor

Mohammad Rakibul Islam; A. N. M. Iftekher; Kazi Rakibul Hasan; Md. Julkar Nayen; Saimon Bin Islam

doi:10.1364/AO.383352

Applied Optics
Vol. 59,
Issue 11,
pp. 3296-3305
(2020)
•https://doi.org/10.1364/AO.383352

Dual-polarized highly sensitive surface-plasmon-resonance-based chemical and biomolecular sensor

Mohammad Rakibul Islam, A. N. M. Iftekher, Kazi Rakibul Hasan, Md. Julkar Nayen, and Saimon Bin Islam

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Mohammad Rakibul Islam, A. N. M. Iftekher, Kazi Rakibul Hasan, Md. Julkar Nayen, and Saimon Bin Islam, "Dual-polarized highly sensitive surface-plasmon-resonance-based chemical and biomolecular sensor," Appl. Opt. 59, 3296-3305 (2020)

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Table of Contents Category
- Optical Devices, Sensors, and Detectors
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About this Article
History
- Original Manuscript: November 15, 2019
- Revised Manuscript: February 27, 2020
- Manuscript Accepted: March 3, 2020
- Published: April 3, 2020

Abstract

As the research work in surface plasmon resonance (SPR)-based photonic crystal fiber (PCF) is getting tighter, a perfectly circular-shaped PCF with elliptical air holes is proposed where the performance parameters are improved significantly. The performances among our designed elliptical, circular, and rectangular air holes are compared, and the best result is achieved with the elliptical air holes. The technique used for the investigation is the finite element method, and for the simulation of data COMSOL Multiphysics 5.3a software is used. The method covers a wider range of the optical spectrum from 0.59 to 1.05 µm. The highest confinement loss achieved through our design is 340 dB/cm. The wavelength sensitivity and amplitude sensitivity are 13,000 nm/RIU and ${1189.46}\;{{\rm RIU}^{ - 1}}$, respectively. The sensor resolution is ${7.69} \times {{10}^{ - 6}}$ for our proposed design. The proposed sensor also achieved a maximum birefringence of ${2.8} \times {{10}^{ - 3}}$, which is, to our knowledge, the highest birefringence reported so far for a PCF-SPR sensor. This enables the fiber to be operated in a dual-polarized mode. The RI for the analyte ranges from 1.33 to 1.40. Based on all the characteristics, the proposed PCF structure can be used effectively for chemical and biomolecular sensing.

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Refs.	Sensing Approach	RI Range	Birefringence	Amplitude Sensitivity ( $- 1028 {R I U}^{- 1}$ )	Wavelength Sensitivity (nm/RIU)	Resolution (Amp.) ( $- 1026.44 {R I U}^{- 1}$ )	Resolution (Wave.)( ${R I U}^{- 1}$ )	Loss Peak (dB/cm)
[40]	External	1.34–1.37	N/A	318	9000	N/A	${R I U}^{- 1}$	700.05
[43]	External	1.33–1.38	${R I U}^{- 1}$	1411	25,000	N/A	$1.11 \times 10^{- 5}$	N/A
[60]	External	1.36–1.39	N/A	442.11	6000	N/A	$1.6 \times 10^{- 3}$	449.91
[61]	External	1.33–1.37	N/A	300	4200	$4 \times 10^{- 6}$	$1.66 \times 10^{- 5}$	3.061
[39]	External	1.40–1.43	N/A	498	15,180	N/A	$3.33 \times 10^{- 5}$	N/A
[62]	External	1.32–1.41	N/A	1170	34,000	N/A	$2.38 \times 10^{- 5}$	0.79
[42]	External	1.33–1.38	N/A	420.4	4600	N/A	$5.6818 \times 10^{- 6}$	4.048
[41]	External	1.33–1.40	N/A	1085	9000	N/A	$2.94 \times 10^{- 6}$	535
[37]	External (side polished)	1.33–1.36	N/A	241	3000	N/A	$2.17 \times 10^{- 5}$	18
[63]	Internal	1.40–1.44	N/A	1739.26	9600	$1.11 \times 10^{- 5}$	$3.341 \times 10^{- 6}$	N/A
[64]	External	1.33–1.43	$5.75 \times 10^{- 6}$	1415	62,000	N/A	$1.04 \times 10^{- 5}$	N/A
Prop. Design	External	1.33–1.40	$1.2 \times 10^{- 3}$	1189.46	13,000	$1.61 \times 10^{- 6}$	$2.8 \times 10^{- 3}$	340

Mohammad Rakibul Islam	https://orcid.org/0000-0002-5884-4949
Kazi Rakibul Hasan	https://orcid.org/0000-0001-8637-3817

Abstract

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Applied Optics