Hollow core waveguide with optimized contour
AssigneesUniversite De Limoges, Cnrs, Glophotonics
InventorsFetah BENABID, Frederic GEROME, Benoit DEBORD
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Abstract
A waveguide with a hollow core (16) delimited by a closed contour includes a succession of arcs (20) of negative curvature, each arc including a chord (24), characterized in that the contour of the hollow core (16) includes small arcs (PA) and large arcs (GA) arranged alternately, each arc (20) being symmetric with respect to a straight line passing through the centre (18) of the hollow core (16) and the middle of the chord (24) 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 (24) and the arc (20), C corresponding to the length of the chord (24).
Claims20
Hollow-core waveguide (16) that is delimited by a closed contour that comprises a series of arcs (20) with a negative curvature, each arc comprising a chord (24), characterized in that the contour of the hollow core (16) comprises small arcs (PA) and large arcs (GA) arranged alternately, each arc (20) being symmetrical with respect to a straight line passing through the center (18) of the hollow core (16) and the middle of its chord (24), 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 (24) and the arc (20), C corresponding to the length of the chord (24).
Dependencies are inferred from the claim text.