Optical surface profile tracking for high-resolution strain measurement

High spatial resolution distributed optical fibre dynamic strain sensor with enhanced frequency and strain resolution

A distributed optical fibre dynamic strain sensor with high spatial and frequency resolution is demonstrated. The sensor which uses φ-OTDR interrogation technique exhibited a higher sensitivity thanks to an improved optical arrangement and a new signal processing procedure. The proposed sensing system is capable of fully quantifying multiple dynamic perturbations along a 5km long sensing fibre ...

High spatial resolution distributed optical fiber dynamic strain sensor with enhanced frequency and strain resolution.

A distributed optical fiber dynamic strain sensor with high spatial and frequency resolution is demonstrated. The sensor, which uses the ϕ-OTDR interrogation technique, exhibited a higher sensitivity thanks to an improved optical arrangement and a new signal processing procedure. The proposed sensing system is capable of fully quantifying multiple dynamic perturbations along a 5 km long sensing...

Road surface texture inspection using high resolution transverse profile measurements

High Resolution Optical Measurement Techniques in Paper Drying

In the scope of this paper, we present the application of three non-invasive optical measurement techniques for the investigation of paper drying process with a high spatial and temporal resolution. These techniques are based on digital image sequence processing with images acquired at different wavelengths ranging from visual to far infrared. Such spectral imaging techniques combine the potent...

High Resolution Optical Spectroscopy

This experiment will allow you to learn a specific optical technique with applications over a wide variety of phenomena. You will use a commercial spectrometer (a very common piece of equipment in research labs) to obtain the emission wavelengths of particular elements (e.g. mercury, sodium, hydrogen and deuterium) as well as to compare the outputs of gas and solid state lasers. You will be abl...