Optical fiber sensors: review of technology and applications

Eid, Mahmoud M. A.

doi:10.11591/ijeecs.v25.i2.pp1038-1046

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…The Sellmeier coefficients appearing in (1) have values for undoped silica core and Fluorinedoped silica cladding according to [25]. The Lorentz-Drude parameters in (2) have values according to [27].…”

Section: Resultsmentioning

confidence: 99%

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Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Shehab

Salah²,

Al-Sawalmeh³

et al. 2023

IJECE

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A few-mode optical fiber surface plasmon resonance sensor with graphene layer is investigated, firstly, with the aim of studying the behavior of the guided modes and, secondly, with the aim of determining the range of the measured refractive index for some selected few-mode fibers. The results show that as the number of modes propagated in the fiber increases, the maximum sensitivity of a particular mode decreases while the range of the measured refractive index of that mode increases. Also, it is shown that the range can be easily tuned with sensitivity consideration by only adjusting the operating wavelength without any modification of the sensor, which is desirable from practical point of view. In addition, it is shown that the core diameter of the fiber should be chosen according to sensitivity and range needing, where a compromise between them must be found. The study presented in this paper can significantly help in developing new sensing techniques, such as multi-parameter sensing, by monitoring the various responses of the modes. Also, it can be used to customize the sensor for specific sensing applications in various fields, especially to measure refractive indices in subranges of 1.38 to 1.46.

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Section: Resultsmentioning

confidence: 99%

“…Optical fiber sensors have been intensively investigated and reviewed in many research due to their high performance and unique capabilities [1], [2]. One of their uses is refractive index detection [3]- [6], which is significantly important in various fields.…”

Section: Introductionmentioning

confidence: 99%

Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Shehab

Salah²,

Al-Sawalmeh³

et al. 2023

IJECE

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“…By passing a beam of light through a clear glucose solution in water, the glucose causes the light intensity to attenuate at different frequencies, creating a characteristic absorption spectrum that allows for highly accurate glucose content determination. Researchers have attempted to measure sugar content by studying the spectroscopic properties of the skin, but light can only penetrate deeply in a narrow frequency range-the infrared range [38], [39] and glucose has no specific signal in this range. Furthermore, light scattering, temperature-dependent light absorption, and light absorption structure by different skin distributions pose additional challenges [40].…”

Section: Research Methods 21 Non-invasive Technology For Determining ...mentioning

confidence: 99%

Optical sensor to improve the accuracy of non-invasive blood sugar monitoring

Zilgarayeva,

Smailov,

Pavlov

et al. 2024

IJEECS

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Optical sensors offer a painless method of monitoring blood glucose levels using various light technologies to analyze blood characteristics without penetrating the skin. The literature review part reflects the progress in optical sensor technology evaluates its potential in blood glucose monitoring by overcoming the limitations of conventional methods and recognizes the challenges and future prospects in this rapidly developing area of research. The results of empirical studies are then presented. The methodology is presented as a non-invasive method of blood glucose monitoring based on near-infrared spectroscopy. To precisely evaluate blood glucose concentrations, spectroscopy techniques involving absorption and reflection are employed at wavelengths 450, 900, 1350, and 1800 nm. After absorption and reflection of glucose molecules, light is generated. An experimental study of different samples revealed a linear relationship between the final output voltage and sugar concentration. The results demonstrate a correlation between blood glucose level and signal intensity after transmission.

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“…There are many types of optical sensor mentioned by Eid [14] and the main configuration of the optical sensor setup consists of three parts: optical source, modulator, and the optical detector. In this experiment, UV light source, optical cables, cuvette, cuvette holder, UV-Vis spectrometer, computer and SpectraSuite software are used for the setup to acquire the absorbance spectra for the heated palm cooking oil.…”

Section: Methodsmentioning

confidence: 99%

Potential development of an optical sensor to determine the quality of heated palm cooking oil

Salleh

Shaipuzaman

Najib

et al. 2022

IJEECS

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Palm oil is an <span>edible vegetable oil yielded from the mesocarp of the palm oil’s fruit. It is commonly used as cooking oil as compared to other cooking oil such as olive or coconut oil because it is inexpensive and has high oxidative stability when used for frying. However, after frequent frying, the oil undergoes some physical and chemical reactions which affect the quality. This leads to the formation of compound that is dangerous to human body which is called free fatty acid (FFA). Therefore, a measurement device needs to be developed to determine the quality of heated cooking oil. In this paper, a spectroscopy study using an open-path method which focus on the palm cooking oil is proposed to examine the reaction of palm oil upon prolonged heating process. Open-path method is a technique where the incident beam will travel through the sample (palm oil) before it is detected by a spectrometer. The result shows that the FFA samples have the optimum absorbance peak at the UV wavelength 339.15 nm and each prolonged heated oil show different absorbance value. Hence, there is a potential to develop an optical sensor to determine the quality of the heated cooking oil.</span>

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Optical fiber sensors: review of technology and applications

Cited by 6 publications

References 25 publications

Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Optical sensor to improve the accuracy of non-invasive blood sugar monitoring

Potential development of an optical sensor to determine the quality of heated palm cooking oil

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