Tapered plastic optical fiber sensor for detection of ethanol concentration in H2O

Saad, Hasnida; Rahman, Mohd Azizi Abdul; Ali, M. T.

doi:10.1109/icsenst.2013.6727715

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…Different types of POF-based sensors have been proposed to measure ethanol concentration. Examples include an intensity-based tapered sensor coated with a mixture of polyvinyl alcohol (PVA) and SiO 2 [ 19 ], a U-bend sensor for ultra-low level ethanol concentration measurement [ 20 , 21 ], a carbon nanotube (CNT) and graphene oxide (GO)-coated unclad sensor [ 22 ], a localized surface plasmon resonance (LSPR) based U-bent sensor [ 23 ], and a D-shaped surface plasmon resonance (SPR) sensor [ 24 ]. However, these sensors were either characterized only for ethanol-water solutions or intended for high-level ethanol concentration measurements, e.g., in the 20% to 100% range.…”

Section: Introductionmentioning

confidence: 99%

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production

Memon

Wang

Strunz

et al. 2023

Sensors

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A novel long period grating (LPG) inscribed balloon-shaped heterocore-structured plastic optical fibre (POF) sensor is described and experimentally demonstrated for real-time measurement of the ultra-low concentrations of ethanol in microalgal bioethanol production applications. The heterocore structure is established by coupling a 250 μm core diameter POF between two 1000 μm diameter POFs, thus representing a large core—small core—large core configuration. Before coupling as a heterocore structure, the sensing region or small core fibre (SCF; i.e., 250 μm POF) is modified by polishing, LPG inscription, and macro bending into a balloon shape to enhance the sensitivity of the sensor. The sensor was characterized for ethanol–water solutions in the ethanol concentration ranges of 20 to 80 %v/v, 1 to 10 %v/v, 0.1 to 1 %v/v, and 0.00633 to 0.0633 %v/v demonstrating a maximum sensitivity of 3 × 106 %/RIU, a resolution of 7.9 × 10−6 RIU, and a limit of detection (LOD) of 9.7 × 10−6 RIU. The experimental results are included for the intended application of bioethanol production using microalgae. The characterization was performed in the ultra-low-level ethanol concentration range, i.e., 0.00633 to 0.03165 %v/v, that is present in real culturing and production conditions, e.g., ethanol-producing blue-green microalgae mixtures. The sensor demonstrated a maximum sensitivity of 210,632.8 %T/%v/v (or 5 × 106 %/RIU as referenced from the RI values of ethanol–water solutions), resolution of 2 × 10−4%v/v (or 9.4 × 10−6 RIU), and LOD of 4.9 × 10−4%v/v (or 2.3 × 10−5 RIU). Additionally, the response and recovery times of the sensor were investigated in the case of measurement in the air and the ethanol-microalgae mixtures. The experimentally verified, extremely high sensitivity and resolution and very low LOD corresponding to the initial rate of bioethanol production using microalgae of this sensor design, combined with ease of fabrication, low cost, and wide measurement range, makes it a promising candidate to be incorporated into the bioethanol production industry as a real-time sensing solution as well as in other ethanol sensing and/or RI sensing applications.

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Section: Introductionmentioning

confidence: 99%

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production

Memon

Wang

Strunz

et al. 2023

Sensors

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“…Additional attractive features of POFs i.e., ruggedness, flexibility, ease of fabrication, low cost, and ability to be operated in the visible range, have sparked considerable interest among researchers, making them an attractive choice for developing optical fibre ethanol sensors for industrial applications. The ethanol concentration measurement has been proposed using a variety of POF sensors , for example, polyvinyl alcohol (PVA) and SiO2 coated tapered sensor 4 , an unclad sensor coated with carbon nanotube (CNT) and graphene oxide (GO) 5 , an uncoated U-bend sensor 6 , a U-bent sensor based on localized surface plasmon resonance (LSPR) 7 and a D-shaped sensor based on surface plasmon resonance 8 Heterocore structured designs for refractive index sensing using GOFs have also attracted significant attention [9][10][11] however, the use of POFs for heterocore structured sensors remains a novel and unique concept. In this work, a side-polished balloon shape heterocore structured POF ethanol sensor using fibres of two different core diameters is investigated.…”

Section: Introductionmentioning

confidence: 99%

Novel side-polished balloon shaped heterocore structured plastic optical fibre ethanol sensor

Memon

Wang

Strunz

et al. 2023

European Workshop on Optical Fibre Sensors (EWOFS 2023)

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A unique side-polished balloon shaped heterocore structure plastic optical fibre (POF) sensor for real-time measurement of very low to high ethanol concentration in water is reported. The sensor is designed as a large core-small core-large core heterocore structure where small core fibre (SCF) acts as a sensing region, whereas large core fibre (LCFs) are used as input and output light waveguide s as well as to introduce the light leakage in the cladding of SCF at the heterocore structure’s input interface and hence generate the significant evanescent field. The principle of operation of the sensor is based on evanescent field interaction at the interface of modif ied SCF and the liquid boundary. The sensor is characterized for ethanol-water solutions in the ethanol concentration ranges of 20 %v/v to 80 %v/v, 1 %v/v to 10 %v/v, and 0.1 %v/v to 1 %v/v, demonstrating a maximum sensitivity of 54673 %/RIU. The experimentally evaluated high sensitivity of this sensor design for real-time measurement of ethanol concentration in water at different ranges makes it a potential candidate for implementation in the industry as a low-cost and real-time solution for ethanol sensing as well as other RI sensing applications.

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Multimode-singlemode-multimode optical fiber sensor coated with novolac resin for detecting liquid phase alcohol

Marfu’ah¹,

Amalia²,

Hatta³

et al. 2018

AIP Conference Proceedings

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Tapered plastic optical fiber sensor for detection of ethanol concentration in H2O

Cited by 8 publications

References 16 publications

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production

Novel side-polished balloon shaped heterocore structured plastic optical fibre ethanol sensor

Multimode-singlemode-multimode optical fiber sensor coated with novolac resin for detecting liquid phase alcohol

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