Hybrid optical waveguide and manufacturing method thereof

G - Physics – 02 – B

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G02B 6/10 (2006.01) G02B 6/12 (2006.01) G02B 6/125 (2006.01) G02B 6/13 (2006.01)

Patent

CA 2245418

A hybrid optical waveguide and a fabrication method thereof are provided. The hybrid optical waveguide having linear and curved sections through which optical signals pass, includes a planar substrate layer, a lower cladding layer formed of a material having optical transparency in the optical communication wavelengths, on the planar substrate layer, a core layer formed on the lower cladding layer, where an optical waveguide constituted of a linear section formed of a first optical polymer having a higher refractive index than the lower cladding layer and a curved section formed of a second optical polymer having a higher refractive index than the first optical polymer is formed, and an upper claddinglayer formed of a material having a lower refractive index than the first and the second optical polymers, surrounding the waveguide core layer. Thus, the opticalwaveguide having the linear and curved sections can reduce traveling loss and optical fiber coupling loss, and minimize the size of the waveguide cross-section.

Guide d'ondes optiques hybride et méthode de fabrication. Le guide d'ondes optiques hybride, ayant des parties linéaires et courbées traversées par les signaux optiques, comprend un substrat planaire, une gaine inférieure formée d'un matériau ayant une transparence optique dans les longueurs d'ondes de communication optique, située sur le substrat planaire. Le guide d'ondes optiques hybride comprend également un coeur formé sur la gaine inférieure, où est formé un guide d'ondes optiques constitué d'une partie linéaire formée d'un premier polymère optique ayant un indice de réfraction plus élevé que celui de la gaine inférieure et d'une partie courbée formée d'un deuxième polymère optique ayant un indice de réfraction plus élevé que celui du premier polymère optique. Finalement, il comprend une gaine supérieure formée d'un matériau ayant un indice de réfraction moins élevé que celui des premier et deuxième polymères optiques, entourant le coeur du guide d'ondes. Ainsi, le guide d'ondes optiques à parties linéaires et courbées peut diminuer les pertes de transmission et de couplage par fibre optique, et réduire la dimension de la coupe du guide d'ondes.

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