Recent advancements in fiber Bragg gratings based temperature and strain measurement

Bhaskar, Chaluvadi V Naga; Pal, Sarbani; Pattnaik, Prasant Kumar

doi:10.1016/j.rio.2021.100130

Cited by 57 publications

(17 citation statements)

References 127 publications

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“…It is then necessary to build sensor networks arranged in series or in parallel. Sensory network systems are discussed in many works, for example (Chan et al 2000;Allwood et al 2019;Bhaskar et al 2021). The possibility to multiplex sensors and/or transmit data over long distances using fibre optic networks, combined with their inherent immunity to external electromagnetic fields, gives fibre optic sensors advantage over popular electronic sensors based on resistive, capacitive, and piezoelectric properties.…”

Section: Introductionmentioning

confidence: 99%

Optical strain sensor with dual fibre Bragg grating topology

Palmowski¹,

Barczak

Kubicka

et al. 2023

Opt Quant Electron

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Section: Introductionmentioning

confidence: 99%

Optical strain sensor with dual fibre Bragg grating topology

Palmowski¹,

Barczak

Kubicka

et al. 2023

Opt Quant Electron

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“…The fiber Bragg gratings or FBGs are the periodic refractive index (r.i.) modulations over some intended length of the fiber core [1,2]. Such r.i. modifications inside the core of the fiber have led to the formation of many optical devices for sensing and communications purposes [3][4][5][6][7][8][9][10][11]. Although FBGs have been extensively used for different purposes, utilizing them to improve the optical transmission link performance has revolutionized the telecommunication industry [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Naga Bhaskar,

Pal,

Pattnaik

2023

J. Opt.

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In this paper, an optical communication system constructed with cascaded fiber Bragg gratings or FBGs of varying lengths capable of operating in the C-band is presented. Here, initially, a passive optical device formed with four cascaded FBGs of varying lengths is proposed and analysed. Subsequently, the proposed device is kept in the optical communication system to reduce the spectral widthof the source, thereby enhancing the system's performance. Analytical formulation based on the transfer matrix method (TMM) of an optical device is incorporated. The effect of such a device on the system performance at various operating distances is discussed. Further, the system performance is studied with the apodized FBGs in the passive optical device. At the end, we investigated the effect of incorporating the cascaded FBG structure in the system utilizing four-level pulse amplitude modulation or PAM-4 modulation . As per the simulation results, the proposed device has given a maximum reflectivity of 98.39% and a minimum FWHM of 0.175 nm for uniform FBGs. But with the apodized FBGs, an FWHM of 0.07 nm with a reflectivity of 59.81% has been achieved. Simulation results reveal that the system formed with the proposed device has given better performance up to a distance of 105 km compared to the absence of the device. At the maximum operating distance of the system with apodized FBGs, the Q-factor and bit error rate (BER) are recorded as 6.712 and 9.5321×10-12, respectively. Apart from the Q-factor and BER estimation, eye height is also used to estimate the system performance at various operating distances.

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“…Fiber optic-based sensors are becoming very popular in a wide variety of applications, including measurement of strain, vibration, temperature, humidity, magnetic fields, and others [ 8 , 9 , 10 , 11 ]. In particular, fiber Bragg grating (FBG) sensors have become one of the primary fiber optic measurement technologies [ 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics

Shiryayev

Vahdati

Yap

et al. 2022

Sensors

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We propose a sensor design for measurement of large strains where direct application of a fiber optic strain gauge is impossible due to the stiffness mismatch between the optical fiber and the structure under test. The sensor design is based on a rhombus type compliant mechanism, which functions to attenuate input strain and transfer it to the ends of the sensing beam with the mounted optical strain gauge. We developed an analytical model of the sensor, which allows us to relate actuation forces, input displacement/strain, and output strain. The analytical model was verified with the finite element analysis and validated against an experimental prototype. The prototype sensor was able to handle input strains exceeding ±2.5 × 105 µε. Potential application areas of the proposed sensor include compliant elastomeric structures, wearables, and soft robotics.

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Recent advancements in fiber Bragg gratings based temperature and strain measurement

Cited by 57 publications

References 127 publications

Optical strain sensor with dual fibre Bragg grating topology

Optical strain sensor with dual fibre Bragg grating topology

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Compliant Mechanism-Based Sensor for Large Strain Measurements Employing Fiber Optics

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