Optical waveguide encapsulation
AssigneeTelefonaktiebolaget L M Ericsson
InventorGoran Palmskog
Life of this patent
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Abstract
An optical waveguide encapsulation for facilitating the tapping of light signals. The optical waveguide includes an optical medium, preferably a polyimide. An encapsulating material comprises a medium which matches the index of the light conducting core of the waveguide. The refractive index of the light conducting core is higher than the refractive index of the encapsulating material, and the encapsulating material is an elastic material.
Claims14
An encapsulation device of optical waveguides, said device comprising:
- an underlayer;
- and
- at least one optical waveguide, supported by said underlayer, said at least ..one optical waveguide including a light conducting core, a coating which has a refractive index which is lower than the refractive index of the light conducting core and a layer including a material with a refractive index which is lower than the refractive index of said light conducting core of said waveguide, said layer extending over at least a part of said surface of the underlayer,
- wherein the light conducting core extends over said layer and is adjacent to a surface of said layer, and
- said coating covers the light conducting core and is adjacent to said surface of the layer next to said light conducting core, and
- the underlayer comprises a disc and said layer is on said disc.
An encapsulation device of optical waveguides, said device comprising:
- an underlayer;
- and
- at least one optical waveguide, supported by said underlayer, said at least one optical waveguide including a light conducting core, a coating which has a refractive index which is lower than the refractive index of the light conducting core and a layer including a material with a refractive index which is lower than the refractive index of said light conducting core of said waveguide, said layer extending over at least a part said surface of the underlayer,
- wherein the light conducting core extends over said layer and is adjacent to a surface of said layer, and
- said coating covers the light conducting core and is adjacent to said surface of the layer next to said light conducting core, and
- said light conducting core is made of a photo-patternable polymeric material.
An encapsulation device of optical waveguides, said device comprising:
- an underlayer;
- and
- at least one optical waveguide, supported by said underlayer, said at least one optical waveguide including a light conducting core, a coating which has a refractive index which is lower than the refractive index of the light conducting core and a layer including a material with a refractive index which is lower than the refractive index of said light conducting core of said waveguide, said layer extending over at least a part of said surface of the underlayer,
- wherein the light conducting core extends over said layer and is adjacent to a surface of said layer, and
- said coating covers the light conducting core and is adjacent to said surface of the layer next to said light conducting core, and
- said coating is made of an elastic material.
Dependencies are inferred from the claim text.