CO detection method by liquid filmed hollow core fiber sensor

2018 ◽  
Author(s):  
jinming wang ◽  
Zhognhu Li ◽  
Junhong Yan
Keyword(s):  
Detection Method ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Co Detection ◽  
Core Fiber

scholarly journals Metal Nanowire Assisted Hollow Core Fiber Sensor for an Efficient Detection of Small Refractive Index Change of Measurand Liquid

Plasmonics ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 1823-1830 ◽  
Author(s):  
A. K. Pathak ◽  
S. Ghosh ◽  
R. K. Gangwar ◽  
B. M. A. Rahman ◽  
V. K. Singh
Keyword(s):  
Refractive Index ◽  
Refractive Index Change ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Index Change ◽  
Efficient Detection ◽  
Core Fiber ◽  
Metal Nanowire

scholarly journals Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2278 ◽  
Author(s):  
Maciej Andrzej Popenda ◽  
Hanna Izabela Stawska ◽  
Leszek Mateusz Mazur ◽  
Konrad Jakubowski ◽  
Alexey Kosolapov ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Negative Curvature ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber

scholarly journals Double Antiresonance Fiber Sensor for the Simultaneous Measurement of Curvature and Temperature

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7778
Author(s):  
Diana Pereira ◽  
Jörg Bierlich ◽  
Jens Kobelke ◽  
Marta S. Ferreira
Keyword(s):  
Optical Properties ◽  
Theoretical Model ◽  
Simultaneous Measurement ◽  
Internal Resonance ◽  
Optical Fiber Sensor ◽  
Single Mode ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber ◽  
Good Agreement

Antiresonant hollow core fibers (ARHCFs) have gained some attention due to their notoriously attractive characteristics on managing optical properties. In this work, an inline optical fiber sensor based on a hollow square core fiber (HSCF) is proposed. The sensor presents double antiresonance (AR), namely an internal AR and an external AR. The sensor was designed in a transmission configuration, where the sensing head was spliced between two single mode fibers (SMFs). A simulation was carried out to predict the behaviors of both resonances, and revealed a good agreement with the experimental observations and the theoretical model. The HSCF sensor presented curvature sensitivities of −0.22 nm/m−1 and −0.90 nm/m−1, in a curvature range of 0 m−1 to 1.87 m−1, and temperature sensitivities of 21.7 pm/°C and 16.6 pm/°C, in a temperature range of 50 °C to 500 °C, regarding the external resonance and internal resonance, respectively. The proposed sensor is promising for the implementation of several applications where simultaneous measurement of curvature and temperature are required.

scholarly journals Negative curvature hollow core fiber sensor for the measurement of strain and temperature

2021 ◽  
Author(s):  
Marta Ferreira ◽  
Joerg Bierlich ◽  
Jens Kobelke ◽  
Joao Pinto ◽  
Katrin Wondraczek
Keyword(s):  
Negative Curvature ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber

Humidity evanescent hollow core fiber sensor

2006 ◽  
Author(s):  
I. Hidalgo ◽  
R. Goya ◽  
I.R. Matias ◽  
F.J. Arregui ◽  
R.O. Claus
Keyword(s):  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber

scholarly journals Liquid level sensor based on dynamic Fabry–Perot interferometers in processed capillary fiber

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pablo Roldán-Varona ◽  
Rosa Ana Pérez-Herrera ◽  
Luis Rodríguez-Cobo ◽  
Luis Reyes-González ◽  
Manuel López-Amo ◽  
...  
Keyword(s):  
Optical Fiber Sensor ◽  
Liquid Level ◽  
Hollow Core ◽  
Immiscible Liquids ◽  
Fabry Perot ◽  
Detection Mode ◽  
Level Sensor ◽  
Core Fiber ◽  
Liquid Level Sensor ◽  
Silica Capillary

AbstractIn this work, a novel optical fiber sensor capable of measuring both the liquid level and its refractive index is designed, manufactured and demonstrated through simulations and experimentally. For this, a silica capillary hollow-core fiber is used. The fiber, with a sensing length of 1.55 mm, has been processed with a femtosecond laser, so that it incorporates four holes in its structure. In this way, the liquid enters the air core, and it is possible to perform the sensing through the Fabry–Perot cavities that the liquid generates. The detection mode is in reflection. With a resolution of 4 μm (liquid level), it is in the state of the art of this type of sensor. The system is designed so that in the future it will be capable of measuring the level of immiscible liquids, that is, liquids that form stratified layers. It can be useful to determine the presence of impurities in tanks.

scholarly journals Vacuum Ultraviolet Absorption Spectroscopy Analysis of Breath Acetone Using a Hollow Optical Fiber Gas Cell

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 478
Author(s):  
Yudai Kudo ◽  
Saiko Kino ◽  
Yuji Matsuura
Keyword(s):  
Body Fat ◽  
Vacuum Ultraviolet ◽  
Exhaled Breath ◽  
Hollow Core ◽  
Gas Cell ◽  
Human Breath ◽  
Healthy Human ◽  
Acetone Concentration ◽  
Core Fiber ◽  
Breath Acetone

Human breath is a biomarker of body fat metabolism and can be used to diagnose various diseases, such as diabetes. As such, in this paper, a vacuum ultraviolet (VUV) spectroscopy system is proposed to measure the acetone in exhaled human breath. A strong absorption acetone peak at 195 nm is detected using a simple system consisting of a deuterium lamp source, a hollow-core fiber gas cell, and a fiber-coupled compact spectrometer corresponding to the VUV region. The hollow-core fiber functions both as a long-path and an extremely small-volume gas cell; it enables us to sensitively measure the trace components of exhaled breath. For breath analysis, we apply multiple regression analysis using the absorption spectra of oxygen, water, and acetone standard gas as explanatory variables to quantitate the concentration of acetone in breath. Based on human breath, we apply the standard addition method to obtain the measurement accuracy. The results suggest that the standard deviation is 0.074 ppm for healthy human breath with an acetone concentration of around 0.8 ppm and a precision of 0.026 ppm. We also monitor body fat burn based on breath acetone and confirm that breath acetone increases after exercise because it is a volatile byproduct of lipolysis.

scholarly journals Transmission of 61 C-band Channels over Record Distance of Hollow-Core-Fiber with L-band Interferers

2020 ◽  
pp. 1-1
Author(s):  
Antonino Nespola ◽  
Stefano Straullu ◽  
Thomas D. Bradley ◽  
Kerrianne Harrington ◽  
Hesham Sakr ◽  
...  
Keyword(s):  
Hollow Core ◽  
Core Fiber ◽  
L Band

scholarly journals Loading and spatially resolved characterization of a cold atomic ensemble inside a hollow-core fiber

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Thorsten Peters ◽  
Leonid P. Yatsenko ◽  
Thomas Halfmann
Keyword(s):  
Atomic Ensemble ◽  
Hollow Core ◽  
Spatially Resolved ◽  
Core Fiber
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