Journal: Electronics Letters
Paper: Methane sensing at 1300-nm band with a hollow core photonic bandgap fiber as gas cell

AUTHORS: A.M. Cubillas, J.M. Lazaro, M. Silva-Lopez, O.M. Conde, M.N Petrovich, J.M. Lopez-Higuera
Abstracts:
In this paper, the feasibility of employing a hollow-core photonic bandgap fiber (HC-PBF) to measure methane concentrations below its Lower Explosive Limit (LEL) is assessed. Using a 5.6-m-long HC-PBF as gas cell, the spectrum of methane at
2+2
3 band at 1300 nm has been recorded and the Q-branch at 1331.55 nm selected for sensing purposes. A minimum detectivity of 49 ppmvm for the system configuration is estimated.

Durante la segunda semana de Octubre (2007), recibimos al Profesor Farahi en nuestras instalaciones en la Universidad de Cantabria.

Entre sus actividades, desarrollo para nosotros la charla:

“Optical Metrology and Micro-fabrication of optical components in the nano-era”

El Profesor Faramarz Farahi es el Presidente del "Physics and Optical Science Department" y el promotor de "Center for Optoelectronics and Optical Communication", ambos en Carolina del Norte en la Universidad de Charlotte, EEUU.

Journal: Sensors and Actuators B: Chemical.
Paper: Quality control of industrial processes by combining a hyperspectral sensor and fisher's linear discriminant analysis

AUTHORS: Pilar Beatriz García-Allende, Olga M. Conde, Jesús Mirapeix, Adolfo Cobo, J.M. López-Higuera
Abstract:
A non-intrusive and non-contact system for the real time detection of spurious elements in raw material processing chains for industrial environments is presented. Observation line spectrographs, obtained from the visible-near infrared (Vis-NIR) reflectance of the material under study, are obtained using a dual spatial-spectral technique. Therefore, a huge amount of information is involved in the process and an efficient classification algorithm would be a great asset. In this paper, the validity of Fisher’s linear discriminant for this application is investigated.
The technique has been successfully tested on the tobacco industry. However, the technique is not limited to tobacco leaves, but other materials can additionally be discriminated or classified.

En fechas próximas el Grupo de Ingeniería Fotónica se trasladará a las nuevas oficinas y al Nuevo Laboratorio de I+D.

Estaremos situados en el Nuevo Campus “Las Llamas” en Santander.