Grazing-Angle Fiber-Optic IRRAS for in Situ Cleaning Validation

2005 ◽  
Vol 9 (3) ◽  
pp. 337-343 ◽  
Author(s):  
Michelle L. Hamilton ◽  
Benjamin B. Perston ◽  
Peter W. Harland ◽  
Bryce E. Williamson ◽  
Mary A. Thomson ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Grazing Angle ◽  
Cleaning Validation

In situ synchrotron far infrared micro-spectroelectrochemistry with a grazing angle objective

2008 ◽  
Vol 51 (5) ◽  
pp. 446-449 ◽  
Author(s):  
F. Hahn ◽  
Y.-L. Mathis ◽  
A. Bonnefont ◽  
F. Maillard ◽  
C.A. Melendres
Keyword(s):  
Grazing Angle ◽  
Far Infrared

Real-time in-situ determination of free Cu(II) at picomolar levels in sea water using a fluorescence lifetime-based fiber optic biosensor

2002 ◽  
Author(s):  
Richard B. Thompson ◽  
Hui-Hui Zeng ◽  
Carol A. Fierke ◽  
Gary Fones ◽  
James W. Moffett
Keyword(s):  
Real Time ◽  
Fluorescence Lifetime ◽  
Fiber Optic ◽  
Sea Water

An intensity modulated fiber-optic carbon monoxide sensor based on Ag/Co-MOF in-situ coated thin-core fiber

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Lian Wang ◽  
Juncheng Zhou ◽  
Yuhao Chen ◽  
Liu Xiao ◽  
Guojia Huang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
Fiber Optic ◽  
Temperature Stability ◽  
Single Mode ◽  
X Ray ◽  
Intensity Modulated ◽  
Core Fiber

Abstract An intensity modulated fiber-optic carbon monoxide (CO) sensor by integrating in-situ solvothermal-growth Ag/Co-MOF sensing film is fabricated and evaluated. The Michelson interference sensing structure is composed of single-mode fiber (SMF), enlarged taper, thin-core fiber (TCF), and Ag film as the reflector. Ag/Co-MOF was coated on the cladding of the TCF as the sensing material, and the enlarged taper is located between TCF and SMF as the coupler. The structure, morphology, compositions and thermal stability of the Ag/Co-MOF sensing film were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), etc. The sensitivity of the sensor is 0.04515 dB/ppm, and the fitting parameter of the CO concentration is 0.99876. In addition, the sensor has the advantages of good selectivity, good signal and temperature stability, and it has potential application in trace CO detection.

In-situ measurement of Auramine-O adsorption on macroporous adsorption resins at low temperature using fiber-optic sensing

2021 ◽  
Vol 213 ◽  
pp. 240-247
Author(s):  
Tursunjan Aydan ◽  
Jing-Jing Yang ◽  
Turghun Muhammad ◽  
Fei Gao ◽  
Xiao-Xia Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fiber Optic ◽  
In Situ Measurement ◽  
Auramine O ◽  
Macroporous Adsorption Resins ◽  
Fiber Optic Sensing

scholarly journals High precision machining of a displacement sensor for helicoidal motions

2021 ◽  
Author(s):  
Zeina ELRAWASHDEH ◽  
Philippe REVEL ◽  
Christine PRELLE ◽  
Frédéric LAMARQUE
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Geometric Model ◽  
Translational Motion ◽  
Surface Characteristics ◽  
Measurement Range ◽  
Linear Displacement ◽  
Displacement Sensor ◽  
Fiber Optic Probes

Abstract This research study presents the design and the high precision manufacture procedure of a fiber-optic displacement sensor. It is composed of two fiber-optic probes associated with a structure of a cones’ grating. The sensor is characterized by its ability to measure the linear displacement for an axis performing a helicoidal motion. This motion has been demonstrated on a high precision lathe; where the spindle provided the rotational motion, associated to a translational motion on the linear stage. This allowed to obtain the two simultaneous motions. The displacement of the translational stage is measured by the sensor in real time.Firstly, a highly precise geometric model of the reflector part for the sensor was developed. This model provided a specific geometry for the cones-assembled grating, which has been precisely manufactured. The geometric parameters and the surface characteristics of each step in the fabricated grating were both identified in situ on the lathe. The agreement between simulation and experimental results is excellent. The performances of the fiber-optic displacement sensor were identified in-situ on the lathe. The analysis of the voltage output signals from the two fiber-optic probes is used to measure the grating displacement. The unbalanced rotation due to non-centered axes was also characterized. The sensor provided a micrometric resolution, on a measurement range of more than one centimeter.

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