scholarly journals Development of a capillary flow-cell for the infrared spectroscopy in gas phase using a hollow core fiber, and its application to the qualitative analysis of hydrochloric acid

2014 ◽  
Vol 19 (1) ◽  
pp. 71-76
Author(s):  
Daisuke Watanabe ◽  
Hikoto Ohta
Keyword(s):  
Infrared Spectroscopy ◽  
Hydrochloric Acid ◽  
Qualitative Analysis ◽  
Gas Phase ◽  
Capillary Flow ◽  
Flow Cell ◽  
Hollow Core ◽  
Core Fiber

Hollow core fiber optics for mid-wave and long-wave infrared spectroscopy

2011 ◽  
Author(s):  
Jason M. Kriesel ◽  
Nahum Gat ◽  
Bruce E. Bernacki ◽  
Rebecca L. Erikson ◽  
Bret D. Cannon ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Fiber Optics ◽  
Hollow Core ◽  
Long Wave ◽  
Core Fiber ◽  
Long Wave Infrared

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 Development of a gas‐phase Raman instrument using a hollow core anti‐resonant tubular fibre

2021 ◽  
Author(s):  
William S.M. Brooks ◽  
Matthew Partridge ◽  
Ian A.K. Davidson ◽  
Charles Warren ◽  
George Rushton ◽  
...  
Keyword(s):  
Gas Phase ◽  
Hollow Core

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

Micromachined Fused Silica Liquid Core Waveguide Capillary Flow Cell

2015 ◽  
Vol 88 (2) ◽  
pp. 1100-1105 ◽  
Author(s):  
K. G. Kraiczek ◽  
J. Mannion ◽  
S. Post ◽  
A. Tsupryk ◽  
V. Raghunathan ◽  
...  
Keyword(s):  
Capillary Flow ◽  
Liquid Core ◽  
Flow Cell ◽  
Fused Silica ◽  
Liquid Core Waveguide

1-m tunable optical delay line using microfluid sliding in a hollow-core fiber: Feasibility study

2017 ◽  
Vol 402 ◽  
pp. 695-698
Author(s):  
Min-Hwan Lee ◽  
Sung-Hyun Kim ◽  
Eun-Sun Kim ◽  
In-Kag Hwang
Keyword(s):  
Feasibility Study ◽  
Delay Line ◽  
Hollow Core ◽  
Optical Delay Line ◽  
Optical Delay ◽  
Core Fiber
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