Université De Limoges

Cnrs

Glophotonics

Glophotonics Sas

Benoit Debord

Fetah Benabid

Frederic Gerome

Philippe Leprince

Jean-Marc Blondy

Raphael Emmanuel Jamier

Raphael Jamier

Frédéric GERÔME

A waveguide with a hollow core () delimited by a closed contour includes a succession of arcs () of negative curvature, each arc including a chord (), characterized in that the contour of the hollow core () includes small arcs (PA) and large arcs (GA) arranged alternately, each arc () being symmetric with respect to a straight line passing through the center () of the hollow core () and the middle of the chord () thereof, the ratio b=2Ra/C of the large arcs being greater than 0.9 for the large arcs (GA), Ra corresponding to the maximum distance between the chord () and the arc (), C corresponding to the length of the chord ().

Hollow core waveguide with optimized contour

A device for the excitation of a gas medium () contained in a casing (), the device being coupled to the casing () and disposed outside same and including an applicator that can generate lateral excitation inside the casing () over at least a portion thereof. The device is characterized in that the casing () is a hollow-core photonic dielectric structure (), in which the core has a diameter smaller than 300 &#x3bc;m, and in that the applicator is of the microwave type and can be used to generate a surface wave that can create and confine a microplasma from the gaseous medium contained in the casing ().

Device for the excitation of a gas column enclosed in a hollow-core optical fibre

Growing community of inventors

Limoges, France

Benoit Debord