Magnetic fluid-based photonic crystal fiber for temperature sensing

As global navigation satellite system (GNNS) signals are unable to enter indoor spaces, substitute methods such as indoor localization-based visible light communication (VLC) are gaining the attention of researchers. In this paper, the systematic investigation of a VLC channel is performed for both direct and indirect line of sight (LoS) by utilizing the impulse response of indoor optical wireless channels. In order to examine the localization scenario, two light-emitting diode (LED) grid patterns are used. The received signal strength (RSS) is observed based on the positional dilution of precision (PDoP), a subset of the dilution of precision (DoP) used in global navigation satellite system (GNSS) positioning. In total, 31 × 31 possible positional tags are set for a given PDoP configuration. The values for positional error in terms of root mean square error (RMSE) and the sum of squared errors (SSE) are taken into consideration. The performance of the proposed approach is validated by simulation results according to the selected indoor space. The results show that the position accuracy enhanced is at short range by 24% by utilizing the PDoP metric. As confirmation, the modeled accuracy is compared with perceived accuracy results. This study determines the application and design of future optical wireless systems specifically for indoor localization.

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“…where k is equal to m + 1 2 RnookPLEDAcos m (φ)Ts(Ψ)g(Ψ)cos(Ψ) (19) where m is the Lambertain order, which is given by m = −ln…”

Section: Adaptive Collaboration Positioningmentioning

confidence: 99%

A Novel Localization Technique Using Luminous Flux

et al. 2019

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“…Recently many types of optical bers have been utilized in sensing technology such as single mode ber (SMF), multimode ber (MMF), microstructure ber, and photonic crystal ber (PCF) [4]. These sensing techniques rely on the Mach-Zehnder interferometer (MZI) [5], Fabry-Perot interferometer (FPI) [6], and Michelson interferometer (MI) [7].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis of side polished single mode fiber for refractive index sensing

BILAL,

THOTTOLI,

LOPEZ-AGUAYO

et al. 2024

Preprint

Self Cite

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In this paper, we introduced a comprehensive study, based on both numerical and experimental analyses, of side polished (SP) single mode fibers (SMF) to investigate their evanescent field interaction with air and liquid analytes (water, isopropanol). In particular, the finite element method (FEM) and the beam propagation method (BPM) are employed to predict the optical properties of the SP-SMF. The alteration of analytes at the sensing region enhances the change in refractive index of the materials. An ad-hoc experimental setup has been designed and built to characterize the side polished single mode fiber when air, water, and isopropanol are set in the side polished region. The sensitivity of the analytes is obtained as 1.207 V/RIU. The performance in terms of effective refractive index and transmittance are reported to show how these SP-SMF can be efficiently used for calculating the liquid refractive index. The simulation and experimental results display the significant performance of the SP-SMF as a sensing element.

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“…The invention of photonic crystal fiber (PCF) was a prominent breakthrough in optical fiber technology which is utilized in various fields such as spectroscopy, biomedical, and industrial machinery [11]. PCF has fascinated attraction over the conventional optical fiber due to its remarkable performance such as large effective area, nonlinearity, low loss, multi-parameter sensors, endlessly single mode, tunable dispersion, high index contrast and extensive range of environmental monitoring [12,13].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Solid-Core Photonic Crystal Fiber Based on Plasmonic Materials for Analyte Refractive Index Sensing

Bilal,

Lopez-Aguayo,

Thottoli

2023

Photonics

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In this study, we presented a simple highly sensitive sensor based on commercially available solid-core photonic crystal fiber (PCF) and surface plasmon resonance (SPR) for measuring the refractive index (RI) of analytes. The numerical simulation based on the finite element method (FEM) has been examined to compute the optical properties such as confinement loss, power spectrum, and transmission intensity of the sensor. The most sensitive and inert plasmonic materials (gold and silver) have been assumed to be coated inside the fiber with the range of analyte RI from 1.32 to 1.40. The performance of the proposed sensor has been evaluated by tracing the several optical features like wavelength sensitivity, amplitude sensitivity, resolution of the sensor, and figure of merit. As a result, the comparative study between silver and gold elements has been carried out in which the maximum sensitivity received was 1.15 μm/RIU and 1.10 μm/RIU, respectively. Whereas, on the base of power spectrum, the obtained sensitivity was 513 μm/RIU for the gold layer. Moreover, the effect of other structural parameters (air holes and plasmonic layer thickness) on the sensing performance has been taken into an account. According to the simulation analysis and results, this sensor would have a great potential in various sensing applications of biomedical and liquid refractive index.

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Magnetic fluid-based photonic crystal fiber for temperature sensing

Cited by 12 publications

References 0 publications

A Novel Localization Technique Using Luminous Flux

A Novel Localization Technique Using Luminous Flux

Numerical and experimental analysis of side polished single mode fiber for refractive index sensing

Numerical Analysis of Solid-Core Photonic Crystal Fiber Based on Plasmonic Materials for Analyte Refractive Index Sensing

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