Simulation study on comprehensive sensing enhancement of BlueP/MoS<sub>2</sub>- and BlueP/WS<sub>2</sub>-based fluoride fiber surface plasmon resonance sensors: analysis founded on damping, field, and optical power

Anuj K. Sharma; Ankit Kumar Pandey; Baljinder Kaur

doi:10.1364/AO.58.004518

Applied Optics
Vol. 58,
Issue 16,
pp. 4518-4525
(2019)
•https://doi.org/10.1364/AO.58.004518

Simulation study on comprehensive sensing enhancement of BlueP/MoS₂- and BlueP/WS₂-based fluoride fiber surface plasmon resonance sensors: analysis founded on damping, field, and optical power

Anuj K. Sharma, Ankit Kumar Pandey, and Baljinder Kaur

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Anuj K. Sharma, Ankit Kumar Pandey, and Baljinder Kaur, "Simulation study on comprehensive sensing enhancement of BlueP/MoS₂- and BlueP/WS₂-based fluoride fiber surface plasmon resonance sensors: analysis founded on damping, field, and optical power," Appl. Opt. 58, 4518-4525 (2019)

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Abstract

Two-dimensional (2D) heterostructure-based fluoride fiber surface plasmon resonance (SPR) sensor designs are simulated and analyzed while emphasizing figure of merit (FOM) enhancement in the near-infrared (NIR) spectral region. Through simultaneous optimization of NIR wavelength and Ag layer thickness, exceptionally large FOM values of $15,650.75 {RIU}^{- 1}$ and $12,409.30 {RIU}^{- 1}$ are achieved for $BlueP / {MoS}_{2}$ -based and $BlueP / {WS}_{2}$ -based fiber SPR sensors, respectively. The results are explained in terms of tunable radiation damping, power loss, and corresponding field enhancement. These FOM values are significantly greater than recently reported sensors. The $BlueP / {MoS}_{2}$ -based sensor with 48.8 nm Ag film and at 738.4 nm wavelength provides an all-round large FOM.

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Wavelength (nm)	$BlueP / {WS}_{2}$ (0.75 nm)	$BlueP / {MoS}_{2}$ (0.75 nm)
724.96	$2.4041 + 0.0504 i$	$2.7609 + 0.0593 i$
805.51	$2.3366 + 0.0339 i$	$2.6376 + 0.0406 i$
906.1	$2.2875 + 0.0252 i$	$2.5544 + 0.0300 i$
955.35	$2.2632 + 0.0207 i$	$2.5128 + 0.0246 i$

Reference	SPR Modalities	FOM ( ${RIU}^{- 1}$ )
Sharma and Kaur [20]	Samarium-doped chalcogenide fiber coated with 2D material in near infrared	6904.012 (graphene) 5897.082 ( ${MoS}_{2}$ )
Sharma and Kaur [29]	Chalcogenide fiber sensor with polymer and 2D layer	1647 ( $λ = 1200 nm$ )
Popescu et al. [35]	Bragg fiber with ${As}_{2} S_{3}$ chalcogenide layer	233.10
Mahajana et al. [36]	Plasmon-waveguide resonance configuration (prism based on spectral interrogation)	840
Li et al. [37]	Optimized all-metal grating	3640
Zhang et al. [38]	Optical fiber coated with a one-dimensional photonic crystal (1 DPC)/metal multifilm	168 (at 1400 nm)
This work	HBL fiber core coated with NaF, Ag, and (BlueP/TMD) heterostructure operating at ORD condition	15,650.75 ( $BlueP / {MoS}_{2}$ ) 12,409.30 ( $BlueP / {WS}_{2}$ )

BlueP/TMD	$d_{m}$ (nm)	$λ$ (μm)	FOM ( ${RIU}^{- 1}$ )	PLR	MMF (mA/μm)	${FOM}^{*}$ (mA/μm-RIU)
$BlueP / {WS}_{2}$	47.70	0.8663	12,409.30	1.791	0.85960	19,104.66
$BlueP / {MoS}_{2}$	48.80	0.7384	15,650.75	1.904	0.77095	22,973.56

S. N.	Layer	RI at $λ = 738.4 nm$	Reference
1.	HBL fluoride glass core	1.514267	[25]
2.	NaF clad	1.323238	[27]
3.	Ag layer	$0.1611885 + 4.583148 i$	[28]
4.	$BlueP / {MoS}_{2}$ monolayer	$2.740677 + 0.056301 i$	[22]
5A.	$H_{2} O$ (reference)	$1.329303 + 1.543639 i \times 10^{- 7}$	[30]
5B.	$D_{2} O$ (analyte)	$1.324963 + 3.443783 i \times 10^{- 8}$	[30]

Wavelength (nm)	$BlueP / {WS}_{2}$ (0.75 nm)	$BlueP / {MoS}_{2}$ (0.75 nm)
724.96	$2.4041 + 0.0504 i$	$2.7609 + 0.0593 i$
805.51	$2.3366 + 0.0339 i$	$2.6376 + 0.0406 i$
906.1	$2.2875 + 0.0252 i$	$2.5544 + 0.0300 i$
955.35	$2.2632 + 0.0207 i$	$2.5128 + 0.0246 i$

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Applied Optics