A Simple Optical Fiber SPR Sensor With Ultra-High Sensitivity for Dual-Parameter Measurement

Mumtaz, Farhan; Roman, Muhammad; Zhang, Bohong; Abbas, Lashari Ghulam; Ashraf, Muhammad Aqueel; Fiaz, Muhammad Arshad; Dai, Yutang; Huang, Jie

doi:10.1109/jphot.2022.3203930

Cited by 22 publications

(3 citation statements)

References 28 publications

(33 reference statements)

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“…These methods leverage the unique properties of OFS to monitor temperature changes, detect vibrations, and analyze spectral shifts, enabling leak localization and flow rate estimation. However, the existing OFS solutions encounter hurdles such as the requirement for costly interrogation units and structural alterations in the OFS design [15] [27]. Addressing these limitations, FSS presents a novel approach to OFS technology.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber specklegram sensor for water leak detection and localization

Inalegwu,

Roman,

Mumtaz

et al. 2024

Optical Waveguide and Laser Sensors III

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This work presents a distributed optical fiber specklegram sensor (FSS) specifically designed for the detection and localization of water leaks. The sensor analyzes specklegram images generated by a No-Core Fiber (NCF) under different water leak conditions, employing a low-cost CCD camera as an interrogation unit. To enhance the accuracy of leak detection, a convolutional neural network (CNN) model is employed to post-process the specklegram images for monitoring the different water leak conditions. The sensor demonstrates high sensitivity, accurately detecting water volumes as small as 0.1 mL. In the initial series of experiments, the sensor achieved a remarkable 100% accuracy in predicting the location of leak spots situated 1 cm apart. However, in subsequent rounds of the experiment, a slight reduction in accuracy was observed (87.5%) due to the issue of water droplet overflow across the Kapton tape used to mark the various test leak spots after multiple cycles of water addition and removal. Therefore, employing an impermeable material for the demarcation will mitigate the water droplet overflow problem. In summary, the proposed sensor offers an efficient approach for water leak detection through the application of machine learning-based specklegram analysis. The findings of this research underscore the potential of FSS as a low-cost, easily implementable, and real-time monitoring system for the detection and localization of water leaks.

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Section: Introductionmentioning

confidence: 99%

Optical fiber specklegram sensor for water leak detection and localization

Inalegwu,

Roman,

Mumtaz

et al. 2024

Optical Waveguide and Laser Sensors III

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“…Recently, Mumtaz et al proposed a fiber-based SPR sensor in which magnetron sputtered is used to coat iron oxide (Fe 2 O 3 ) on Ag to protect the Ag layer from oxidation. This inclusion of iron oxide increases the effective absorption coefficient, which in turn improves the SPR sensor's sensitivity [25]. Additionally, Fe 2 O 3 is a great prospect for future endeavors in SPR sensor developments since they are environmentally friendly, abundant, air-stable, highly corrosion-resistant, non-toxic, and affordable [26].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application

Muthumanikkam,

Vibisha,

Lordwin Prabhakar

et al. 2023

Sensors

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This numerical research presents a simple hybrid structure comprised of TiO2-Cu-BaTiO3 for a modified Kretschmann configuration that exhibits high sensitivity and high resolution for biosensing applications through an angular interrogation method. Recently, copper (Cu) emerged as an exceptional choice as a plasmonic metal for developing surface plasmon sensors (SPR) with high resolution as it yields finer, thinner SPR curves than Ag and Au. As copper is prone to oxidation, especially in ambient conditions, the proposed structure involves the utilization of barium titanate (BaTiO3) film as a protection layer that not only preserves Cu film from oxidizing but enhances the performance of the sensor to a great extent. Numerical results also show that the utilization of a thin adhesive layer of titanium dioxide (TiO2) between the prism base and Cu film not only induces strong interaction between them but also enhances the performance of the sensor. Such a configuration, upon suitable optimization of the thickness of each layer, is found to enhance sensitivity as high as 552°/RIU with a figure of merit (FOM) of 136.97 RIU−1. This suggested biosensor design with enhanced sensitivity is expected to enable long-term detection with greater accuracy and sensitivity even when using Cu as a plasmonic metal.

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“…Furthermore, conventional probes and sensors can be damaged or destroyed by molten materials, making in situ measurements difficult. Comparing with the traditional electronic devices, Fiber optic sensors offer numerous advantages over traditional sensors, including high sensitivity, immunity to electromagnetic interference, and the ability to operate in harsh environments [9][10][11][12][13][14]. Recent advancements in fiber optic sensors Raman spectroscopy have opened up new avenues for studying the molecular structure of molten materials [15,16].…”

Section: Introductionmentioning

confidence: 99%

Structural analysis of molten materials by a remote fiber optic Raman sensor

Zhang

Tekle

O’Malley

et al. 2023

Optical Waveguide and Laser Sensors II

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This study presents a novel in situ high-temperature fiber optic Raman probe that enables the study of the physical properties and structure of molten samples at temperatures up to 1400 °C. To demonstrate the functionality of the hightemperature fiber optic Raman probe, different composition mold fluxes were evaluated in this report. The Raman spectra at flux molten temperature were successfully collected and analyzed. A deconvolution algorithm was employed to identify peaks in the spectra associated with the molecular structure of the components in each sample. The experimental results demonstrate that the composition-dependent Raman signal shift can be detected at high temperatures, indicating that molten materials analysis using a high-temperature Raman system shows significant promise. This flexible and reliable high-temperature Raman measurement method has great potential for various applications, such as materials development, composition and structure monitoring during high-temperature processing, chemical identification, and process monitoring in industrial production.

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A Simple Optical Fiber SPR Sensor With Ultra-High Sensitivity for Dual-Parameter Measurement

Cited by 22 publications

References 28 publications

Optical fiber specklegram sensor for water leak detection and localization

Optical fiber specklegram sensor for water leak detection and localization

Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application

Structural analysis of molten materials by a remote fiber optic Raman sensor

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