Respiratory monitoring system based on fiber optic macro bending

Purnamaningsih, Retno Wigajatri; Widyakinanti, Astari; Dhia, A. S. Bonnet-Ben; Gumelar, Muhammad Raditya; Widianto, Arif; Randy, Muhammad; Soedibyo, Harry

doi:10.1063/1.5023982

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…This study proves that the sensitivity increases by using only a bending number of seven with the influence of the bending radius [13]. Dhia et al [13] and Purnamaningsih et al [14] developed sensors using a single fiber optic mode with a wavelength of 1,550 nm. They successfully produced a bending number of seven without a hetero-core structure.…”

Section: Introductionsupporting

confidence: 61%

Intensity Loss of ZnO Coated on Fiber Optic

Arif

Shaari

Ehsan

2023

Journal of Nanomaterials

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Macrobends are optical fiber structures suitable for detecting motion changes. This structure has been developed using single-mode fibers and a combination of single-mode and multimode fibers called hetero-core. In this study, a new macrobending structure was designed and developed by adding a nano-ZnO element to the fiber optic core based on Revolution 4.0. The addition of nanomaterial elements involves an etching process that uses harmful chemicals or high-cost laser technology. Therefore, hetero-core was applied in this study to replace the etching process. The ZnO-coated fiber optics with 10 (ZnO1), 20 (ZnO2), and 30 (ZnO3) times of dip coating were developed using the dip-coating method and characterized using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy. Sensitivity measurement was conducted with glued optical fiber in the form of bending using a tape with a bending dimension of 2.5 cm × 1.5 cm and a wavelength of 1,550 nm. Morphological characterization using SEM proves that nanoparticles are attached to the optical fiber, and the EDX characterization confirms that the nanoparticles are ZnO elements. Optical fiber sensor sensitivity using core sizes 9, 50–9–50, 50–9–50 (ZnO1), 50–9–50 (ZnO2), and 50–9–50 (ZnO3) achieved sensitivity values of 0.91, 1.61, 2.98, 3.34, and 3.51, respectively. This study successfully produced ZnO-coated optical fiber sensors with a hetero-core structure without performing the etching process and successfully increased the sensitivity of the sensors.

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Section: Introductionsupporting

confidence: 61%

Intensity Loss of ZnO Coated on Fiber Optic

Arif

Shaari

Ehsan

2023

Journal of Nanomaterials

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“…The light intensity can also be changed by changing the distance between the optical fiber and the glass. The strain of the external environment can be reflected in the change in optical power [ 108 , 109 , 110 , 111 ]. Wearable optical fiber sensor based on the light intensity change principle is mainly used in the medical field in joint angle monitoring, respiratory monitoring, gait assistance, and heartbeat monitoring [ 112 , 113 ].…”

Section: Wearable Optical Fiber Sensor Based On the Principle Of Ligh...mentioning

confidence: 99%

Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Zhang

Wang

Zheng

et al. 2023

Sensors

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Wearable optical fiber sensors have great potential for development in medical monitoring. With the increasing demand for compactness, comfort, accuracy, and other features in new medical monitoring devices, the development of wearable optical fiber sensors is increasingly meeting these requirements. This paper reviews the latest evolution of wearable optical fiber sensors in the medical field. Three types of wearable optical fiber sensors are analyzed: wearable optical fiber sensors based on Fiber Bragg grating, wearable optical fiber sensors based on light intensity changes, and wearable optical fiber sensors based on Fabry–Perot interferometry. The innovation of wearable optical fiber sensors in respiration and joint monitoring is introduced in detail, and the main principles of three kinds of wearable optical fiber sensors are summarized. In addition, we discuss their advantages, limitations, directions to improve accuracy and the challenges they face. We also look forward to future development prospects, such as the combination of wireless networks which will change how medical services are provided. Wearable optical fiber sensors offer a viable technology for prospective continuous medical surveillance and will change future medical benefits.

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“…The very small dimensions of optical fibers allow them to be encapsulated inside very thin catheters and injection needles, thereby enabling localized monitoring of thoracic movement to derive RR (Fajkus et al 2017). Macrobend (Koyama et al 2018, Purnamaningsih et al 2018, Witt et al 2012 and microbend (Chen et al 2013, Yang et al 2015b optic fibers are adopted to transform the movements to the fluctuations in the intensity of optic signals. The fiber Bragg grating (FBG) is widely used in RR monitoring.…”

Section: Optical Sensorsmentioning

confidence: 99%

“…In biomedical applications, plastic optical fibers (POFs) could avoid fiber break, which is a limitation of glass optical fiber, therefore are more biocompatible (Chen et al 2013). The macrobend optic fibers could measure RR under different physiological conditions including standing, walking, running, and sleeping (Purnamaningsih et al 2018). Additionally, fiberoptic sensors such as FBG could be fabricated into chest straps (Fajkus et al 2016) and T-shirts (Massaroni et al 2018.…”

Section: Optical Sensorsmentioning

confidence: 99%

Recent development of respiratory rate measurement technologies

et al. 2019

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Respiratory rate (RR) is an important physiological parameter whose abnormality has been regarded as an important indicator of serious illness. In order to make RR monitoring simple to perform, reliable and accurate, many different methods have been proposed for such automatic monitoring. According to the theory of respiratory rate extraction, methods are categorized into three modalities: extracting RR from other physiological signals, RR measurement based on respiratory movements, and RR measurement based on airflow. The merits and limitations of each method are highlighted and discussed. In addition, current works are summarized to suggest key directions for the development of future RR monitoring methodologies.

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Respiratory monitoring system based on fiber optic macro bending

Cited by 5 publications

References 9 publications

Intensity Loss of ZnO Coated on Fiber Optic

Intensity Loss of ZnO Coated on Fiber Optic

Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Recent development of respiratory rate measurement technologies

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