Fiber-optic-based measurement of ammonia for water monitoring applications

1996 ◽  
Author(s):  
Ashutosh Sharma ◽  
Sohail H. Sheikh
Keyword(s):  
Fiber Optic ◽  
Water Monitoring ◽  
Monitoring Applications

Rugged Fiber-Optic Raman Probe for Process Monitoring Applications

2001 ◽  
Vol 55 (10) ◽  
pp. 1337-1340 ◽  
Author(s):  
Pentti Niemelä ◽  
Janne Suhonen
Keyword(s):  
Fiber Optic ◽  
Signal To Noise Ratio ◽  
Notch Filter ◽  
Laser Line ◽  
Fiber Optic Probe ◽  
Monitoring Applications ◽  
Optic Probe ◽  
Holographic Notch Filter ◽  
Filter Thickness ◽  
Raman Probe

We report on the development of a simple, rugged fiber-optic probe for process Raman measurements, in which laser line rejection is based on an absorptive longpass filter made from a direct bandgap CdTe semiconductor. The probe can be used with a fixed wavelength laser at 830 nm, and Raman spectra can be recorded down to 200 cm−1 from the laser line. The filter thickness can be adjusted for final turning of the filter edge, as the edge slope is almost independent of thickness in the range 0.1 to 1 mm. Other properties of the probe, such as its signal-to-noise ratio and signal-to-background ratio, are shown to compare well with those of a state-of-the-art probe based on holographic notch filter techniques.

Near-infrared diffuse reflectance fiber optic spectroscopy for process monitoring applications

1999 ◽  
Author(s):  
Steven C. Switalski ◽  
Todd Colin ◽  
Neil Redden ◽  
Eric Stahlecker ◽  
Vijay Parthasarathy
Keyword(s):  
Process Monitoring ◽  
Diffuse Reflectance ◽  
Near Infrared ◽  
Fiber Optic ◽  
Monitoring Applications

scholarly journals Implementation of a Mobile Platform Based on Fiber Bragg Grating Sensors for Automotive Traffic Monitoring

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1567 ◽  
Author(s):  
Kivilcim Yuksel ◽  
Damien Kinet ◽  
Karima Chah ◽  
Christophe Caucheteur
Keyword(s):  
Fiber Optic ◽  
Traffic Monitoring ◽  
Fiber Optic Sensors ◽  
Mobile Platform ◽  
Vehicle Speed ◽  
Distributed Monitoring ◽  
Fiber Bragg Grating Sensors ◽  
Weigh In Motion ◽  
Monitoring Applications ◽  
Fbg Sensors

Instrumentation techniques, implementation and installation methods are major concerns in today’s distributed and quasi-distributed monitoring applications using fiber optic sensors. Although many successful traffic monitoring experiments have been reported using Fiber Bragg Gratings (FBGs), there has been no standardized solution proposed so far to have FBG seamlessly implemented in roads. In this work, we investigate a mobile platform including FBG sensors that can be positioned on roads for the purpose of vehicle speed measurements. The experimental results prove the efficiency of the proposed platform, providing a perspective toward weigh-in-motion systems.

Development of an integrated microfluidic instrument for unattended water-monitoring applications

2010 ◽  
Vol 31 (15) ◽  
pp. 2632-2640 ◽  
Author(s):  
Victoria A. VanderNoot ◽  
Ronald F. Renzi ◽  
Bruce P. Mosier ◽  
James L. Van de Vreugde ◽  
Isaac Shokair ◽  
...  
Keyword(s):  
Water Monitoring ◽  
Monitoring Applications

High Resolution Fiber-Optic 3-C Seismic Sensor System for In-Well Imaging and Monitoring Applications

2006 ◽  
Author(s):  
Sverre Knudsen ◽  
G.B. Havsgård ◽  
A. Berg ◽  
Dag Thingbø ◽  
F. Bostick ◽  
...  
Keyword(s):  
High Resolution ◽  
Fiber Optic ◽  
Sensor System ◽  
Monitoring Applications
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