Mixed silica/polymer active directional coupler, in integrated optics
AssigneeFrance Telecom
InventorsDominique Bosc, Nicole Devoldere, Bertrand Loisel
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Abstract
This invention relates to a directional optical coupler including at least two optical guide cores (26, 28), in silica, lying on a cladding (24) in a mineral dielectric material, and a covering layer (30) in a polymer material, which covers the two optical guide cores, and whose index is less than that of the optical guide cores.
Claims13
A directional optical coupler including at least two silica optical guide cores lying on a mineral dielectric cladding material, said guide cores being separated by a coupling zone, and a covering layer comprised of a polymer material having a refractive index, which covering layer completely covers the two optical guide cores, and completely fills said coupling zone, and wherein the refractive index of the polymer material is less than that of the optical guide cores.
A directional optical coupler including at least two optical guide cores comprised of silica, lying on a cladding comprised of a mineral dielectric material, and a covering layer comprised of a polymer material having a refractive index, which covers the two optical guide cores, wherein the refractive index of the polymer material is less than that of the optical guide cores, and also including means for thermo-optic activation.
Dependencies are inferred from the claim text.