Point-by-Point Induced High Birefringence Polymer Optical Fiber Bragg Grating for Strain Measurement

Gao, Shixin; Wang, Heng; Chen, Yuhang; Wei, Heming; Woyessa, Getinet; Bang, Ole; Min, Rui; Qu, Haiyan; Caucheteur, Christophe; Hu, Xuehao

doi:10.3390/photonics10010091

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…6(d-f). The differences in sensitivities found across multi-point DF devices can be attributed to the differing transmission characteristics of optical signals at various wavelengths in optical fibers, affecting their response to parameter changes [29], and inconsistencies in the manufacturing process, such as insufficient fiber pull or small deviations in the positioning of FBG in the PDMS.…”

Section: Curvature Characterizationmentioning

confidence: 99%

Double-Fishtail-Shaped FBG Wearable Device for Sitting Posture Recognition and Real-Time Respiratory Monitoring

Wang,

Zheng,

Nie

et al. 2024

IEEE Sensors J.

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Musculoskeletal issues frequently affect individuals who sit for prolonged periods, particularly in work settings. Addressing and preventing these upper body musculoskeletal disorders (UBMDs) requires close monitoring of seated behavior among employees. This study introduces a solution-an adaptable wearable device incorporating three distinct modular devices using fiber Bragg grating (FBG) technology. The FBG array, integrated into a polydimethylsiloxane (PDMS)-based double fishtail (DF) design, significantly enhances curvature sensitivity and durability. By fine-tuning the length of DF silicone, we further optimized curvature sensitivity. Our wearable device demonstrates prompt correlation with thoracic spine patterns, validated against a motion capture system (MoCap) using 10 volunteers as a benchmark. Furthermore, it successfully identifies common sitting postures-normal, breast-bearing, and hunchbacked-with exceptional accuracy exceeding 96.30%, employing the Random Forest Machine Learning methodology. Additionally, this device facilitates timely and accurate monitoring of respiratory rate (RR) by time-frequency domain analysis. This innovative optical solution showcases its potential for a variety of wearable device applications.

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Section: Curvature Characterizationmentioning

confidence: 99%

Double-Fishtail-Shaped FBG Wearable Device for Sitting Posture Recognition and Real-Time Respiratory Monitoring

Wang,

Zheng,

Nie

et al. 2024

IEEE Sensors J.

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“…Fiber gratings are formed by interferential irradiation of optical fibers by laser or ultraviolet light beams [86][87][88]. As shown in Figure 1, when broadband light is incident on a fiber grating sensor, specific wavelengths of light are reflected while others are transmitted.…”

Section: Fiber Bragg Gratingmentioning

confidence: 99%

Advancements in Battery Monitoring: Harnessing Fiber Grating Sensors for Enhanced Performance and Reliability

Yu,

Chen,

Deng

et al. 2024

Sensors

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Batteries play a crucial role as energy storage devices across various industries. However, achieving high performance often comes at the cost of safety. Continuous monitoring is essential to ensure the safety and reliability of batteries. This paper investigates the advancements in battery monitoring technology, focusing on fiber Bragg gratings (FBGs). By examining the factors contributing to battery degradation and the principles of FBGs, this study discusses key aspects of FBG sensing, including mounting locations, monitoring targets, and their correlation with optical signals. While current FBG battery sensing can achieve high measurement accuracies for temperature (0.1 °C), strain (0.1 με), pressure (0.14 bar), and refractive index (6 × 10−5 RIU), with corresponding sensitivities of 40 pm/°C, 2.2 pm/με, −0.3 pm/bar, and −18 nm/RIU, respectively, accurately assessing battery health in real time remains a challenge. Traditional methods struggle to provide real-time and precise evaluations by analyzing the microstructure of battery materials or physical phenomena during chemical reactions. Therefore, by summarizing the current state of FBG battery sensing research, it is evident that monitoring battery material properties (e.g., refractive index and gas properties) through FBGs offers a promising solution for real-time and accurate battery health assessment. This paper also delves into the obstacles of battery monitoring, such as standardizing the FBG encapsulation process, decoupling multiple parameters, and controlling costs. Ultimately, the paper highlights the potential of FBG monitoring technology in driving advancements in battery development.

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Fiber Bragg grating (FBG)-based sensors: a review of technology and recent applications in structural health monitoring (SHM) of civil engineering structures

Yassin,

Farhat,

Soleimanpour

et al. 2024

Discov Civ Eng

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Point-by-Point Induced High Birefringence Polymer Optical Fiber Bragg Grating for Strain Measurement

Cited by 6 publications

References 33 publications

Double-Fishtail-Shaped FBG Wearable Device for Sitting Posture Recognition and Real-Time Respiratory Monitoring

Double-Fishtail-Shaped FBG Wearable Device for Sitting Posture Recognition and Real-Time Respiratory Monitoring

Advancements in Battery Monitoring: Harnessing Fiber Grating Sensors for Enhanced Performance and Reliability

Fiber Bragg grating (FBG)-based sensors: a review of technology and recent applications in structural health monitoring (SHM) of civil engineering structures

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