Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

Wang, Pengfei; Zhang, Shuo; Wang, Ruoning; Farrell, Gerald; Zhang, Meng; Geng, Tao; Lewis, Elfed; Tian, Ke

doi:10.1364/oe.27.013754

Cited by 20 publications

(6 citation statements)

References 39 publications

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“…Thus, COF sensors are commonly used for stretching or curvature detection and have been a low-cost tool for breathing and heartbeat monitoring. Combined with novel structures and sensitized components, COF sensors also have the potential for temperature and refractive index detection. , But the complexity of preparation and the difficulty to repeat the process with the current technology also increase their cost. Additionally, the size of COF sensors based on transmission spectrum demodulation is difficult to further reduce, while reflection spectrum based COFs are competitive and compelling solutions for miniaturized devices, such as Fabry–Pérot interferometer probes.…”

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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“…Several studies have been carried out involving a combination of an LPG with an SMS fiber structure [153][154], and some interesting research has been undertaken to fabricate an LPG using fusion splices at precise intervals with different types of fibers, such as MMF and SMF ( Fig. 8(i)) [155][156][157][158], MMF and NCF [159].…”

Section: E Combinations Of Sms Fiber Structuresmentioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

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A singlemode-multimode-singlemode (SMS) fiber structure consists of a short section of multimode fiber fusionspliced between two SMS fibers. The mechanism underpinning the operation of an SMS fiber structure is multimode interference and associated self-imaging. SMS structures can be used in a variety of optical fiber systems but are most commonly used as sensors for a variety of parameters, ranging from macro-world measurands such as temperature, strain, vibration, flow rate, RI and humidity to the micro-world with measurands such as proteins, pathogens, DNA, and specific molecules. While traditional SMS structures employ a short section of standard multimode fiber, a large number of structures have been investigated and demonstrated over the last decade involving the replacement of the multimode fiber section with alternatives such as a hollow core fiber or a tapered fiber. The objective of replacing the multimode fiber has most often been to allow sensing of different measurands or to improve sensitivity. In this paper, several different categories of SMS fiber structures, including traditional SMS, modified SMS and tapered SMS fiber structures are discussed with some theoretical underpinning and reviews of a wide variety of sensing examples and recent advances. The paper then summarizes and compares the performances of a variety of sensors which have been published under a number of headings. The paper concludes by considering the challenges faced by SMS based sensing schemes in terms of their deployment in real world applications and discusses possible future developments of SMS fiber sensors.

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“…A precise cutting system was employed to be used for the fabrication of the Dip sensor. This system comprises a coaxial 3D precision displacement platform to determine the cutting position, a fiber cleaver, and a microscope to determine the splicing point [34,35].…”

Section: Sensor Fabricationmentioning

confidence: 99%

Air pressure measurement of circular thin plate using optical fiber multimode interferometer

et al. 2021

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Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

Cited by 20 publications

References 39 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

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Air pressure measurement of circular thin plate using optical fiber multimode interferometer

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