Simultaneous measurement of temperature and strain based on peak power changes and wavelength shift using only one uniform fiber bragg grating

Malakzadeh, Abdollah; Mansoursamaei, Mohsen; Pashaie, Rasoul

doi:10.1007/s11082-021-02865-4

Cited by 11 publications

(3 citation statements)

References 35 publications

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“…This property has garnered the attention of researchers for use in sensing purposes. For instance, research conducted by Malakzadeh et al [44] utilized this uniform FBG for temperature and strain sensing. Meanwhile, in RH sensing, the uniform FBG is also being employed to detect different RH levels using various sensitive coating materials to enhance the sensor's performance [45]- [47].…”

Section: ) Uniform Fiber Bragg Gratingmentioning

confidence: 99%

Metal Oxide Coated Optical Fiber for Humidity Sensing Application: A Review

Mustaffa,

Rashid,

Jin

et al. 2023

IEEE Access

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Humidity measurement in biomedicals, industry and electronic manufacturing applications needs an accurate and fast measurement of relative humidity by the sensor. In recent years, electronic sensors are utilized in the market, but optical humidity sensors provide several advantages over it. This paper reports the classification of optical fiber humidity sensors based on their working principles, such as fiber Bragg gratings, interferometers, and resonators. Along with the mentioned optical fiber structures, their fabrication process, equipment required for humidity sensing and the coating technique used are explained in this review. Recently, metal oxide semiconductors have been widely used as sensing material, specifically in humidity sensor applications. Thus, this paper explores optical fiber humidity sensors based on the three working principles mentioned, all of which incorporate metal oxide coatings. This review reveals that the most commonly used metal oxide for optical fiber humidity sensing is graphene oxide. This is because graphene oxide offers high sensitivity, fast response and recovery time over the other types of metal oxide. A large number of oxygen-containing groups on the surface and edge of graphene oxide also contribute to humidity sensing performance since it can permeate and absorb more water molecules. The use of hybrid nanomaterials is recently discovered and their potential as emerging coating material for optical applications are not fully exploited yet. Thus, there is still an opportunity for improvement in terms of sensitivity, response and recovery time in the context of optical fiber humidity sensor.INDEX TERMS Metal oxide, fiber optic, humidity sensor.

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Section: ) Uniform Fiber Bragg Gratingmentioning

confidence: 99%

Metal Oxide Coated Optical Fiber for Humidity Sensing Application: A Review

Mustaffa,

Rashid,

Jin

et al. 2023

IEEE Access

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“…As quasi-distrusted sensors, FBGs have attracted much interest in the applications of strain and temperature measurements for highway structures, buildings, railways, and gesture recognition [12][13][14][15][16][17]. The FBG-based sensing systems work by measuring the displacement of the Bragg peak in the spectrum and then deriving the change in the physical quantity.…”

Section: Introductionmentioning

confidence: 99%

Strain FBG-Based Sensor for Detecting Fence Intruders Using Machine Learning and Adaptive Thresholding

Elleathy,

Alhumaidan,

Alqahtani

et al. 2023

Sensors

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This paper demonstrates an intruder detection system using a strain-based optical fiber Bragg grating (FBG), machine learning (ML), and adaptive thresholding to classify the intruder as no intruder, intruder, or wind at low levels of signal-to-noise ratio. We demonstrate the intruder detection system using a portion of a real fence manufactured and installed around one of the engineering college’s gardens at King Saud University. The experimental results show that adaptive thresholding can help improve the performance of machine learning classifiers, such as linear discriminant analysis (LDA) or logistic regression algorithms in identifying an intruder’s existence at low optical signal-to-noise ratio (OSNR) scenarios. The proposed method can achieve an average accuracy of 99.17% when the OSNR level is <0.5 dB.

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“…In the last two reports published by our group, which also fall into the third category, a single (uniform) FBG pasted on a tilted cantilever beam was used to simultaneously measure strain and temperature on a sample under test [30][31].The cantilever beam which is placed on the sample structure, causes the uniform strain applied to the structure to become a non-uniform strain on the FBG. Non-uniform strain along with the uniform FBG also results in a change in FWHM and peak power of the FBG re ection spectrum.…”

Section: Introductionmentioning

confidence: 99%

Comparison of FWHM and peak power of FBG spectrum for simultaneous measurement of strain and temperature based on tilted cantilever beam

Mansoursamaei

Gholampour

Malakzadeh

2022

Preprint

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Among the optical fiber sensors, fiber Bragg grating (FBG) has found remarkable attraction and many applications due to its ability to measure all environmental parameters, high accuracy and sensitivity, easy installation, and low price. The sensor's ability to simultaneous measurement of two environmental (physical) parameters, especially strain and temperature, has made it even more demanding. Recently, two techniques based on FWHM and peak power changes of FBG spectrum have been proposed for simultaneous measurement of temperature and strain that use a uniform FBG on a tilted cantilever beam. In this article, we evaluate and compare both techniques and demonstrate that both are equivalent and have almost similar behaviour but do not have the same applications. We find that at the low strain range the peak power technique is more accurate while at the high strain range the FWHM technique has better accuracy. Therefore, in applications such as monitoring civil structures that have a high strain range, it is better to use the FWHM technique and in some delicate industrial applications with a low strain range, the peak power technique is used.

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Simultaneous measurement of temperature and strain based on peak power changes and wavelength shift using only one uniform fiber bragg grating

Cited by 11 publications

References 35 publications

Metal Oxide Coated Optical Fiber for Humidity Sensing Application: A Review

Metal Oxide Coated Optical Fiber for Humidity Sensing Application: A Review

Strain FBG-Based Sensor for Detecting Fence Intruders Using Machine Learning and Adaptive Thresholding

Comparison of FWHM and peak power of FBG spectrum for simultaneous measurement of strain and temperature based on tilted cantilever beam

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