scholarly journals Polymer Optical Fiber Sensors in Healthcare Applications: A Comprehensive Review

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3156 ◽  
Author(s):  
Arnaldo G. Leal-Junior ◽  
Camilo A.R. Diaz ◽  
Letícia M. Avellar ◽  
Maria José Pontes ◽  
Carlos Marques ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Review Paper ◽  
Impact Resistance ◽  
Life Quality ◽  
Movement Analysis ◽  
High Sensitivity ◽  
Research Field ◽  
World Population ◽  
Polymer Optical Fiber ◽  
Healthcare Applications

Advances in medicine and improvements in life quality has led to an increase in the life expectancy of the general population. An ageing world population have placed demands on the use of assistive technology and, in particular, towards novel healthcare devices and sensors. Besides the electromagnetic field immunity, polymer optical fiber (POF) sensors have additional advantages due to their material features such as high flexibility, lower Young’s modulus (enabling high sensitivity for mechanical parameters), higher elastic limits, and impact resistance. Such advantages are well-aligned with the instrumentation requirements of many healthcare devices and in movement analysis. Aiming at these advantages, this review paper presents the state-of-the-art developments of POF sensors for healthcare applications. A plethora of healthcare applications are discussed, which include movement analysis, physiological parameters monitoring, instrumented insoles, as well as instrumentation of healthcare robotic devices such as exoskeletons, smart walkers, actuators, prostheses, and orthosis. This review paper shows the feasibility of using POF sensors in healthcare applications and, due to the aforementioned advantages, it is possible to envisage a further widespread use of such sensors in this research field in the next few years.

Plastic Optical Fiber Sensor for Detection of Ethanol Concentrations

2020 ◽  
Vol 307 ◽  
pp. 84-89
Author(s):  
Aisyah Hanim Surani ◽  
Affa Rozana Abdul Rashid ◽  
N. Arsad ◽  
Amna Afiqah Nasution Hakim
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Deionized Water ◽  
Plastic Optical Fiber ◽  
Polymer Optical Fiber ◽  
Ethanol Sensor ◽  
Output Ratio ◽  
Higher Sensitivity

An optimized study of tapered polymer optical fiber (POF) for measurement of different concentration of ethanol in deionized water (0.5%-3.5%) is proposed and demonstrated. This sensor operated based on evanescent wave absorption principle. The cladding of PMMA based POF is removed using organic solvents which can be used to create tapered POF. The unclad length around 1 cm and 3 cm as well as the waist diameters of POF in the range of 5 mm and 8 mm were compared for their efficiency as an ethanol sensor based on power output ratio values. Tapered POF with smaller waist diameter and longer tapered length showed higher sensitivity as ethanol sensor. Therefore, by tailoring the length and tapered diameter of POF, high sensitivity of ethanol sensor can be fabricated.

scholarly journals Gas Pressure Sensor Based on BDK-Doped Polymer Optical Fiber

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 717 ◽  
Author(s):  
Xin Cheng ◽  
Yi Liu ◽  
Changyuan Yu
Keyword(s):  
Optical Fiber ◽  
Pressure Sensor ◽  
Chemical Structure ◽  
High Sensitivity ◽  
Gas Pressure ◽  
Air Pressure ◽  
Response Behavior ◽  
Polymer Optical Fiber ◽  
The Stability ◽  
Doped Polymer

This paper presents a high sensitivity gas pressure sensor with benzyl-dimethylketal (BDK)-doped polymer optical fiber Bragg grating (POFBG), whose sensitivity is up to 8.12 pm/kPa and 12.12 pm/kPa in positive and negative pressure atmosphere, respectively. The high sensitivity can be explained by its porous chemical structure. The stability and response behavior under air pressure atmosphere has also been investigated. The new understanding of the air pressure response principle and sensitivity difference for the presented sensor can be a worthy reference.

High Sensitivity Polymer Optical Fiber-Bragg-Grating-Based Accelerometer

2012 ◽  
Vol 24 (9) ◽  
pp. 763-765 ◽  
Author(s):  
Alessio Stefani ◽  
Søren Andresen ◽  
Wu Yuan ◽  
Nicolai Herholdt-Rasmussen ◽  
Ole Bang
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Polymer Optical Fiber ◽  
Optical Fiber Bragg Grating

scholarly journals Femtosecond Laser Microprinting of a Polymer Optical Fiber Interferometer for High-Sensitivity Temperature Measurement

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1192 ◽  
Author(s):  
Chi Li ◽  
Changrui Liao ◽  
Jia Wang ◽  
Zongsong Gan ◽  
Yiping Wang
Keyword(s):  
Femtosecond Laser ◽  
Optical Fiber ◽  
Temperature Measurement ◽  
Temperature Response ◽  
High Sensitivity ◽  
Optical Fiber Communication ◽  
Polymer Optical Fiber ◽  
Structural Morphology ◽  
Fiber Communication ◽  
Fiber Sensors

Femtosecond laser induced multi-photon polymerization technique can be applied to fabricate an ultracompact polymer optical fiber interferometer which was embedded in a section of hollow core fiber. The production of the photoresin, used in this work, is described. Such a device has been used for temperature measurement, due to its excellent thermal properties. Transmission spectrum, structural morphology, and temperature response of the polymer optical fiber interferometer are experimentally investigated. A high wavelength sensitivity of 6.5 nm/°C is achieved over a temperature range from 25 °C to 30 °C. The proposed polymer optical fiber interferometer exhibits high temperature sensitivity, excellent mechanical strength, and ultra-high integration. More complex fiber-integrated polymer function micro/nano structures produced by this technique may result in more applications in optical fiber communication and optical fiber sensors.

High-sensitivity temperature sensor based on Bragg grating in BDK-doped photosensitive polymer optical fiber

2011 ◽  
Vol 9 (2) ◽  
pp. 020602-20604 ◽  
Author(s):  
程旭升 Xusheng Cheng ◽  
邱薇薇 Weiwei Qiu ◽  
武文轩 Wenxuan Wu ◽  
罗艳华 Yanhua Luo ◽  
田秀杰 Xiujie Tian ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Polymer Optical Fiber ◽  
Photosensitive Polymer
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