Enhancement of the sensitivity of a temperature sensor based on fiber Bragg gratings via weak value amplification

Salazar-Serrano, Luis José; Barrera, David; Amaya, Waldimar; Sales, Salvador; Pruneri, Valerio; Capmany, J.; Torres, Juan P.

doi:10.1364/ol.40.003962

Cited by 51 publications

(17 citation statements)

References 15 publications

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“…However, in recent years, there has been an impressive development of optical fiber sensors (OFSs) by reason of their advantages over traditional sensors, such as immunity to electromagnetic interference, flexibility, lightweight, high sensitivity and accuracy, intrinsic safety, multiplexing capabilities, resistance to radiation and corrosion, 17–19 and high‐speed data acquisition 20 . These innovative sensors have been applied to sense a number of different measurands, such as strain, 21 stress, 22 temperature, 23,24 moisture, vibration, slope, 25 chemicals, 26 and even curvature 27–30 and shape 31–35 . Nevertheless, strain and temperature sensors are the most widely employed technologies for SHM applications 36,37 …”

Section: Introductionmentioning

confidence: 99%

Effects of bonding on the performance of optical fiber strain sensors

Floris

Sangiorgio

Adam

et al. 2021

Structural Contr & Hlth

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Summary The structural health monitoring (SHM) of existing buildings, structures, and infrastructures has become increasingly important in recent years, while the interest of the scientific community is focused on the use of new high‐performance technologies. Fiber optic sensors have become particularly attractive, thanks to their potential for monitoring strain in smart structures. The performance of this new technology depends to a large extent on the bonding technique used for its manufacture. Although the related literature has identified a correlation between some efficiency issues and the geometrical parameters of the bonding and mechanical properties of the materials adopted, the phenomenon is still not completely understood. This paper describes an in‐depth study of the geometrical and mechanical parameters that influence the efficiency of optical fiber point sensors' surface bonding by synergistically related techniques such as computational simulation, experimental tests, sensor manufacturing, and data analysis. The paper's novelty is fourfold: (1) the investigation of the strain transfer mechanism of surface‐bonded fiber optic sensors by considering, for the first time, all the parameters influencing the phenomenon through a considerable number of finite element (FE) analyses (117 three‐dimensional FE models); (2) the development of a series of bonding efficiency predictive models; (3) the design of a specific laboratory test to validate the computational outcomes; and (4) the definition of useful guidelines for effective bonding manufacturing in order to maximize the performance of these sensors when acquiring monitoring data.

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Section: Introductionmentioning

confidence: 99%

Effects of bonding on the performance of optical fiber strain sensors

Floris

Sangiorgio

Adam

et al. 2021

Structural Contr & Hlth

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“…Weak measurement techniques are important in the interpretation of quantum physics phenomena [3], [4] and in precision metrology [5], [6]. At present, weak measurement techniques have been widely used in various measurements, such as: Gushi-Hanchen shift [7], polarization rotation [8], temperature [9], and phase shift [10], beam deflection [11], sub-pulse width time delay [12].…”

Section: Introductionmentioning

confidence: 99%

Spectrum Intensity Ratio Detection for Frequency Domain Weak Measurement System

Yang

Guan

et al. 2020

IEEE Photonics J.

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The traditional method of frequency domain weak measurement has a lot of noise.In this paper, we analyze the 2000 curves obtained by experiments and get the conclusion that the signal-to-noise ratio will increase with the increase of signal strength. We simulated the 252 curves produced by the phase change and used this to fit the relationship between the original calculation method and our spectral height ratio (HR) method. Through previous experimental data verification, our method can greatly reduce the system noise of the dualmode working area in the frequency domain weak measurement. At present, universal frequency domain weak measurement and measurement system have received increasing attention. In this paper, we introduce a frequency domain weak measurement with spectrum height ratio (HR) that can greatly reduce the system noise in the frequency domain weak measurement bimodal work area. Moreover, we completed comparative experiments on a total internal reflection weak measurement system. The experimental results show that the system resolution obtained by using the HR method is 6.33 × 10 −7 RIU, which is an order of magnitude higher than that of the conventional center wavelength offset algorithm which is commonly used in weak frequency measurement.

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“…With proper pre-selection and post-selection, this slight offset can be amplified and eventually be read out from the pointer received by the detector, which is the so-called weak value amplification. In recent years, weak measurements have shown great advantages in many high-precision measurements such as Goos-Hänchen and Imbert-Fedorov shifts [3,4], the photonic spin Hall effect [5], phase measurement [6,7], velocity measurement [8], temperature sensing [9], reflection angle of light beam [10], and optical rotation [11]. Differential detection methods are important in high precision measurements, also as a self-compensating switchable measurement method where dielectric properties are highly important.…”

Section: Introductionmentioning

confidence: 99%

A Differential Detection Method Based on a Linear Weak Measurement System

Xiong

Guan

et al. 2019

Sensors

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Self-reference detection is necessary and important to a biosensor. The linear weak measurement system based on total internal reflection has attracted widespread attention due to its high stability, label-free detection, and easy integration. In this paper, we propose a differential detection method based on the linear total internal reflection weak measurement system. We introduce the half-wave plate (HWP) to convert the H light and the V light to each other, thereby obtaining the difference in phase change of the optical path before and after the HWP. Experiments show that the system can not only achieve differential detection, but also has high stability. The linear differential weak measurement system proposed in this paper not only provides a new differential measurement method for real-time biosensors, but also enriches the types of weak measurement sensors.

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Enhancement of the sensitivity of a temperature sensor based on fiber Bragg gratings via weak value amplification

Cited by 51 publications

References 15 publications

Effects of bonding on the performance of optical fiber strain sensors

Effects of bonding on the performance of optical fiber strain sensors

Spectrum Intensity Ratio Detection for Frequency Domain Weak Measurement System

A Differential Detection Method Based on a Linear Weak Measurement System

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