Method for realizing an optical waveguide in a substrate by means of a femtosecond laser

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United States of America Patent

PATENT NO 9488778
SERIAL NO

14784900

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Abstract

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A method for realizing an optical waveguide in a substrate by means of a femtosecond laser system, the waveguide including a birefringence axis tilted by a predetermined angle for at least a segment, is disclosed. The method includes preparing a substrate including a free surface, focusing a femtosecond laser beam into the substrate, in order to induce a refractive index modification of a volume of such substrate around the focal region. The method further includes varying a propagation direction of the femtosecond laser beam to reach a propagation direction describing a predetermined non-vanishing angle with respect to the normal to the free surface of the substrate, and translating the focal region with respect to the substrate, in order to generate the waveguide segment.

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Patent Owner(s)

Patent OwnerAddress
EPHOS S R LPIAZZA VETRA 17 MILANO 20123

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Corrielli, Giacomo Sesto San Giovanni, IT 2 6
Crespi, Andrea Busto Arsizio, IT 8 37
Osellame, Roberto Milan, IT 10 37
Sciarrino, Fabio Naples, IT 2 30

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