An inexpensive high-temperature optical fiber thermometer

Moore, Travis J.; Jones, Matthew R.; Tree, Dale R.; Allred, David D.

doi:10.1016/j.jqsrt.2016.10.018

Cited by 5 publications

(6 citation statements)

References 19 publications

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“…This emitted radiation can easily be used for the optical measurement of the body temperature, where the total radiated energy according to the Stefan-Boltzmann law increases, depending on the absolute temperature with the fourth power (see Equation ( 3) [11]), where σ is the Stefan-Boltzmann constant according to Equation (4).…”

Section: Temperature Measurement Using Blackbody Radiation Methodsmentioning

confidence: 99%

“…To evaluate the measured temperature, we can use the signal amplitude measurement on the photodiode [40] or evaluate the spectrum of the radiation with a spectrometer [4].…”

Section: Signal Detection For Blackbody Radiation Methodmentioning

confidence: 99%

“…There are noncontact measurement methods [3] using emitted radiation of the observed body [4], known as temperature measurement by thermal cameras [5][6][7][8]. These methods require knowledge of the surface emissivity of the measured bodies.…”

Section: Introductionmentioning

confidence: 99%

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Temperature Measurement Using Optical Fiber Methods: Overview and Evaluation

et al. 2020

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The paper deals with the overview of fiber optic methods suitable for temperature measurement and monitoring. The aim is to evaluate the current research of temperature measurements in the interval from temperature close to 0 up to 1000°C. Since the measuring chain is a functional combination of optical methods, optical fiber properties, and other photonic elements together with control electronic circuits, it is necessary to find a suitable compromise between the chosen measurement method, measuring range, accuracy, and resolution. Optical fiber sensors can be used in cases where standard electrical measurement methods cannot be used. These may be areas with high electrical and magnetic interference or critical areas. Therefore, there is intensive development of optical and fiber optic methods based on blackbody and greybody radiation, luminescence, fiber Bragg gratings (FBGs), and interferometers.

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Section: Temperature Measurement Using Blackbody Radiation Methodsmentioning

confidence: 99%

“…To evaluate the measured temperature, we can use the signal amplitude measurement on the photodiode [40] or evaluate the spectrum of the radiation with a spectrometer [4].…”

Section: Signal Detection For Blackbody Radiation Methodmentioning

confidence: 99%

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Temperature Measurement Using Optical Fiber Methods: Overview and Evaluation

et al. 2020

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“…Referring to advancements in optical fiber studies, Rayleigh scattering caused by local refractive index fluctuations along the glass fiber can be used to measure strains and temperature. Every point on the optical fiber can send a different Rayleigh scattering signal when subjected to temperature change, and therefore, every point along the fiber acts as a temperature sensor [14][15][16][17][18]. is feature of optical fibers makes it an ideal temperature sensor to measure high spatial resolution temperature distribution.…”

Section: Introductionmentioning

confidence: 99%

Optical‐Fiber‐Based Smart Concrete Thermal Integrity Profiling: An Example of Concrete Shaft

Zhong

Guo

Deng

2018

Advances in Materials Science and Engineering

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Concrete is currently the most widely used construction material in the world. The integrity of concrete during the pouring process could greatly affect its engineering performance. Taking advantage of heat production during the concrete curing process, we propose an optical-fiber-based thermal integrity profiling (TIP) method which can provide a comprehensive and accurate evaluation of the integrity of concrete immediately after its pouring. In this paper, we use concrete shaft as an example to conduct TIP by using the optical fiber as a temperature sensor which can obtain high spatial resolution temperature data. Our method is compared with current thermal infrared probe or embedded thermal sensor-based TIP for the concrete shaft. This innovation makes it possible to detect defects inside of the concrete shaft with thorough details, including size and location. First, we establish a 3D shaft model to simulate temperature distribution of concrete shaft. Then, we extract temperature distribution data at the location where the optical fiber would be installed. Based on the temperature distribution data, we reconstruct a 3D model of the concrete shaft. Evaluation of the concrete integrity and the existence of the potential defect are shown in the paper. Overall, the optical-fiber-based TIP method shows a better determination of defect location and size.

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“…The matrix, as a mathematical tool, has penetrated much of optics field and created a system of its own [1][2][3]. When dealing with geometrical optics problems, we can use the transformation matrix; when dealing with polarization related problems, we can take advantage of Jones matrix; but for dealing with parallel beam splitter, which has both light changes and polarization issues, some matrix methods are helpless.…”

Section: Introductionmentioning

confidence: 99%

Study on Parallel Beam Splitting Polarizer with Matrix Method

Xie¹,

Wang²,

Dong³

2017

Proceedings of the 7th International Conference on Management, Education, Information and Control (MEICI 2017)

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Abstract. Jones matrix is a useful method which is widely used in optical research. But there is no existing such matrix for the parallel beam splitting polarizer, because it changes both the direction and polarization of incident light. This document explains and demonstrates how to treat a parallel beam splitting polarizer with matrix method. A block diagonal matrix is designed, in which the top left block is a 3-order transform matrix dealing with the geometrical light propagation, the bottom right block is a 2-order Jones matrix dealing with the polarization. As an application, we use this method to deal with the high efficiency polarizer. The theoretical deduce is coincident with experimental results.

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An inexpensive high-temperature optical fiber thermometer

Cited by 5 publications

References 19 publications

Temperature Measurement Using Optical Fiber Methods: Overview and Evaluation

Temperature Measurement Using Optical Fiber Methods: Overview and Evaluation

Optical‐Fiber‐Based Smart Concrete Thermal Integrity Profiling: An Example of Concrete Shaft

Study on Parallel Beam Splitting Polarizer with Matrix Method

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