Fabrication and Applications of Microfiber

Lim, Kok-Sing; Harun, S. W.; Arof, Hamzah; Ahmad, Harith

doi:10.5772/31123

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…Radiation dosimetry is the magnitude of the irradiated radiation dose received by a body/matter arising from exposure to high-energy radiation such as X-ray, gamma ray, etc. Several methods exist for radiation measurement such as optically stimulated luminescence (OSL) [1], thermo-luminescence (TL) [2], radio-luminescence (RL) [3], and semiconductor-based devices and chemical materials [4][5][6]. Currently, optical fiber-based dosimeters present a high potency to act as thermoluminescence dosimeters (TLD) in many applications [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have been exploring the capabilities of silica (SiO 2 ) optical fibers in recent years to detect various ionizing radiations [15]. The exposure of silica optical fibers to ionizing radiation results in several observable effects, including radiation-induced absorption (RIA), radiation-induced luminescence (RIL), an increase in optical radiation scattering along the fiber length, thermoluminescence, and alterations in the refractive index of the fiber [5,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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A Fiber-Optical Dosimetry Sensor for Gamma-Ray Irradiation Measurement in Biological Applications

Elsharkawi,

Alazab,

Sayed

et al. 2023

Biosensors

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In this paper, we propose a novel fiber-optical dosimetry sensor for radiation measurement in biological applications. A two-dimensional (2D) fiber-optical dosimeter (FOD) for radiation measurement is considered. The sensors are arranged as a 2D array in a tailored holder. This FOD targets accurate industrial and medical applications which seek more tolerant radiation dosimeters. In this paper, the FOD sensors are subjected to gamma-ray radiation facilities from the 137Cs gamma-ray irradiator type for low doses and 60Co gamma-ray irradiator for high doses. For better evaluation of radiation effects on the FOD sample, the measurements are performed using eight sensors (hollow cylinder shape) with two samples in each dose. The sensors were measured before and after each irradiation. To the author’s knowledge, the measurements of FOD transplanted inside animals are presented for the first time in this paper. A 2D simulation program has been implemented for numerical simulation based on the attenuation factors from the absorbed dose inside the in vivo models. A comparison between the FOD and the standard thermo-luminescence detector is presented based on the test of in vivo animal models. The results indicate that the proposed FOD sensor is more stable and has higher sensitivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Fiber-Optical Dosimetry Sensor for Gamma-Ray Irradiation Measurement in Biological Applications

Elsharkawi,

Alazab,

Sayed

et al. 2023

Biosensors

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show abstract

“…We used the flame brushing technique described in [50], in which an SMF (Corning SMF-28 Ultra Optical Fiber) is placed horizontally on two translation stages after removing (stripping off) the coating from the section of the SMF to be tapered, and held by two holders (S1 and S2), as shown in Figure 6. The flame underneath heats the fiber, which is being stretched by the translation stages at the same time, to make biconical fiber taper [51]. The fiber has two transition regions, which have a direct influence on the spectrum and losses, and a uniform waist [52].…”

Section: Making Of a Fiber Tapermentioning

confidence: 99%

Investigation of a Bragg Grating-Based Fabry–Perot Structure Inscribed Using Femtosecond Laser Micromachining in an Adiabatic Fiber Taper

et al. 2020

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This paper presents the fabrication of a fiber Bragg grating (FBG)-based Fabry–Perot (FP) structure (7 mm total length) in an adiabatic fiber taper, investigates its strain and temperature characteristics, and compares the sensing characteristics with a standard polyimide coated FBG sensor. Firstly, a simulation of the said structure is presented, followed by the fabrication of an adiabatic fiber taper having the outer diameter reduced to 70 μ m (core diameter to 4.7 μ m). Next, the sensing structure, composed of two identical uniform FBG spaced apart by a small gap, is directly inscribed point-by-point using infrared femtosecond laser (fs-laser) micromachining. Lastly, the strain and temperature behavior for a range up to 3400 μ ε and 225 ° C, respectively, are investigated for the fabricated sensor and the FBG, and compared. The fabricated sensor attains a higher strain sensitivity (2.32 pm/ μ ε ) than the FBG (0.73 pm/ μ ε ), while both the sensors experience similar sensitivity to temperature (8.85 pm/ ° C). The potential applications of such sensors include continuous health monitoring where precise strain detection is required.

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Polymer_Assisted Fabrication of High Performance Optical Microfiber Knot Resonators

Kazemzadeh

Khodarahmi

Karimi–Alavijeh

2019

2019 27th Iranian Conference on Electrical Engineering (ICEE)

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Fabrication and Applications of Microfiber

Cited by 5 publications

References 44 publications

A Fiber-Optical Dosimetry Sensor for Gamma-Ray Irradiation Measurement in Biological Applications

A Fiber-Optical Dosimetry Sensor for Gamma-Ray Irradiation Measurement in Biological Applications

Investigation of a Bragg Grating-Based Fabry–Perot Structure Inscribed Using Femtosecond Laser Micromachining in an Adiabatic Fiber Taper

Polymer_Assisted Fabrication of High Performance Optical Microfiber Knot Resonators

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