To develop an accurate, compact and sensitive optical sensor capable of performing non-invasive instantaneous measurements of the rate of dissipation of turbulent kinetic energy TKE (E [m2/s3]). Turbulence dissipation rates provide vital information to determine mixing processes in the water column. In addition, enables the scaling information needed to link large mixing events with smallscale ...

. Alex Vitkin niversity of Toronto and Ontario Cancer Institute epartment of Medical Biophysics, Biophysics and Radiation Oncology oronto M5G 2M9, Canada Abstract. Interstitial quantification of the optical properties of tissue is important in biomedicine for both treatment planning of minimally invasive laser therapies and optical spectroscopic characterization of tissues, for example, prostat...

Williams C. C., Wickramasinghe, H. K., Absolute Optical Ranging with 200-nm Resolution, Opt. Lett., 1989, pp. 542, vol. 14. Abstract. Rovati, L., Minoni, U., Docchio, F., Dispersive White Light Combined with a Frequency-Modulated Continues-Wave Interferometer for High-Resolution Absolute Measurements of Distance, Opt. Lett., 1997, pp. 850-852, vol. 22. Abstract. Rovati, L., Minoni, U., Bonardi,...

The use of more and more complex systems in transportation, bio medical devices, defence, production, systems, etc., that are more and more automated, having to comply with many norms related to low energy consumption, miniaturization, insensivity to modifications of the surrounding conditions, security, etc. induce the need of new sensors that have to be reliable, low cost, easy to produce, if...

In this paper automatic sensor identification of sensor classes within a high-density randomized array, without a priori knowledge of sensor locations, is demonstrated. Two different fluorescence-based sensor types, with hundreds of replicates each, were randomly distributed into an optical imaging fiber array platform. The sensor element types were vapor-sensitive microspheres with the environ...

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 ...

In this paper a method to track the rotating force vector set up within the air-gap of radial flux rotating electrical machines using fibre Bragg gratings is reported. The proposed technique offers the potential for simultaneous rotor speed and position monitoring. This specific sensor design, together with other FBG-based multi-parameter measurements, is aimed to create an all-optical sensor s...