4 keys to implementing fiber optic temperature sensing
Consequently, humidity-driven coating expansion transfers some strain into the fiber optic core, resulting in an additional humidity-dependent
Consequently, humidity-driven coating expansion transfers some strain into the fiber optic core, resulting in an additional humidity-dependent
To establish a mathematical model correlating the temperature and thermal errors, this study measured synchronized data of phase errors and
The results also show that the ability of temperature inhibition can be controlled flexibly by adjusting the design parameters of the insulation cavity. It has potential application value in some
As a key measurement device in ultra-high voltage direct current transmission systems, temperature is always the main factor restricting the large-scale application of fiber optic current
We present a theoretical and experimental analysis of the sensing capabilities of Raman-based distributed temperature optical fiber sensor (RDTS)
Several fiber optic sensing concepts have been exploited to develop thermometers as well as to perform temperature measurements based on reflectance, microbending, fluorescence, absorbance, and
We propose and demonstrate a temperature compensation method based on the inherent polarization quality factor (PQF) of the quarter-waveplate in the fiber optic current sensors.
The most affected by temperature are the quarter-wave plate and the sensitive spun fiber. It will lead to significant errors in the fiber optic current
Taking advantage of the development of optical-fiber communication technologies, the fiber-optic gyroscope (often abbreviated FOG) started to be investigated in the mid-1970s, opening
A fiber grating sensor capable of distinguishing between temperature and strain, using a reference and a dual-wavelength fiber Bragg grating, is presented. Error analysis and measurement
This work introduces a fiber-optic temperature sensing system that synergistically combines a Sagnac interferometer (SI) and a Fiber Bragg Grating (FBG) within a fiber ring laser
The fiber optic gyroscope (FOG) is one of the most successful fiber sensors [1, 2] and is a key component of inertial navigation systems. Digital closed-loop FOGs have many advantages such as
High-temperature measurements above 1000 °C are critical in harsh environments such as aerospace, metallurgy, fossil fuel, and power production.
This paper presents analysis and experiment on simultaneous measurement of strain and temperature using pair of etched and un-etched fiber Bragg grating (FBG) fabricated in a single
Especially, under the influence of temperature, the change of half-wave voltage and polarization crosstalk will lead to the deterioration of the performance of the modulator and bring
Fiber optic gyroscope (FOG) has been widely used as satellite and automobile attitude sensor for its high reliability and light weight. However, environment temperature variation results in
There is an optical interference noise in the conventional Raman-based fiber-optics distributed sensing, which results in a poor temperature resolution performance. In addition, the traditional whole-fiber
Abstract: This article presents a demodulation method for GaAs fiber-optic temperature sensing utilizing reference filters.
This paper investigates the mechanism of thermal-induced errors in interferometric fiber optic gyroscopes (IFOGs) caused by temperature changes in
However, in the same fiber the temperature/strain sensitivity difference is small, so the sensing accuracy is limited greatly. In this paper, we calculate the relation between sensing accuracy
This paper review recent advances in Raman distributed optical fiber sensing in terms of temperature measurement accuracy, spatial resolution, dual-parameters and applications.
The temperature disturbance mainly affects the sensing fiber and the quarter-wave plate located in the sensing head. Among them, the temperature affects the optical fiber mainly by the
The temperature measurement error is 1.64°C, and the strain measurement error is 20.04 με, which is consistent with the theoretical analysis. The sensing results provide technical reference
Although these works have studied the temperature characteristics of FOCS to varying degrees, they have not considered the influence of the polarization-maintaining transmission fiber
In this paper, an RBF neural network is proposed to compensate for the temperature error of the miniature FOG. The experimental results show that the RBF neural network-based temperature error
Accurate measurement methods based on fiber-optic sensors have been widely applied in many scientific fields with the advantages of wide measurement range, high sensitivity, anti
A larger current gives an increased wire temperature, which in turn causes the temperature of the fiber optic sensing ring to increase and creates an uneven temperature
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