Cascaded FPI/LPFG interferometer for high-precision simultaneous measurement of strain and temperature

Chen, Mao qing; Zhao, Yong; He, Wei; Krishnaswamy, Sridhar

doi:10.1016/j.yofte.2019.102025

Cited by 21 publications

(2 citation statements)

References 15 publications

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“…The response sensitivity of FPIs can be further improved by setting functional materials in the cavity or on the diaphragm surface to enhance the environmental disturbances. Various FPI sensors have been developed to measure humidity, strain, temperature, refractive index, and ultrasound . In addition, the cavities of the FPI sensor can be also cascaded to realize the simultaneous measurement of multiple parameters .…”

Section: Optical Sensing Principlesmentioning

confidence: 99%

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

et al. 2022

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Recent advances in the Medical Internet of Things (MIoT) and big data enable a prospering platform for pervasive healthcare and facilitate the transformation from hospital-centered to human-centered healthcare. Wearable devices as human interfaces provide first-hand data and real-time monitoring, which are key technologies in the MIoT. Several remarkable surveys have been conducted to summarize the recent progress in wearable sensors and systems for the MIoT and pervasive medicine. However, few have focused on wearable optical sensing (WOS) technologies, which is an emerging sensing modality in wearable devices. WOS can achieve high precision, high compatibility, high anti-interference, and low motion artifacts for human vital signal acquisition, which are particularly useful in special scenarios such as intensive care units (ICUs). These technologies can also be integrated with smart fabrics or mobile computing for out-of-hospital healthcare. This work provides the first literature review of WOS for pervasive medicine. We aim to systematically summarize the emerging WOS technologies in the MIoT for disease diagnosis and health monitoring. Specifically, this review covers the technical bases and design principles of major WOS technologies and their application domains for monitoring and treatment. We also discuss the opportunities and challenges, especially in the COVID-19 outbreak.

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Section: Optical Sensing Principlesmentioning

confidence: 99%

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

et al. 2022

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“…To date, numerous optical fiber-based temperature sensors have been documented, leveraging technologies such as fiber Bragg grating, Fabry-Perot, microstructured optical fiber, and various conventional fibers including single-mode, multi-mode, tapered, and cascaded fibers, as well as fluorescence-based optical fibers. The optical fiber Fabry-Perot interferometer (FPI) cavity has gained huge interest for temperature sensing due to its inline configuration, linear responsiveness, high sensitivity, and convenient reflection-based detection mode [2,3]. In recent years, femtosecond (fs) lasers have become widely employed for crafting photonic devices within transparent materials such as bulk glasses and various types of optical fibers [4].…”

Section: Introductionmentioning

confidence: 99%

Fiber-optic temperature sensor based on embedded rare-earth luminescent nanoparticles

Pathak,

Kulkarni,

Krishnaswamy

2024

Health Monitoring of Structural and Biological Systems XVIII

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In this work, we report the fabrication and characterization of a fiber-optic temperature sensor based on embedding rareearth nanoparticle emitters (NaYF4: Yb 3+ , Er 3+ ) inside an optical fiber. A micro channel passing through the core of single mode fiber (SMF) is fabricated using a femtosecond laser, and the microcavity is subsequently filled with optically active medium. In this work, the NaYF4: Yb 3+ , Er 3+ works as an active medium with temperature-sensitive upconversion luminescence properties to provide temperature measurements allowing for real-time temperature monitoring. The obtained results show promise for addressing temperature-related challenges in various fields, reaffirming the crucial role of optical sensors for a wide range of applications including industrial, medical, and environmental monitoring.

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A temperature insensitive strain sensor based on SMF-FMF-NCF-FMF-SMF with core-offset fusion

Chen,

Xu,

et al. 2023

Appl. Phys. B

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Cascaded FPI/LPFG interferometer for high-precision simultaneous measurement of strain and temperature

Cited by 21 publications

References 15 publications

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

Fiber-optic temperature sensor based on embedded rare-earth luminescent nanoparticles

A temperature insensitive strain sensor based on SMF-FMF-NCF-FMF-SMF with core-offset fusion

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