Integrated waveguide coupler
First Claim
Patent Images
1. An integrated waveguide coupler comprising:
- a first waveguide, the first waveguide comprising;
a higher refractive index portion; and
a lower refractive index portion, adjacent to the higher refractive index portion of the first waveguide;
a second waveguide, the second waveguide comprising;
a higher refractive index portion; and
a lower refractive index portion, adjacent to the higher refractive index portion of the second waveguide;
a third waveguide between the first waveguide and the second waveguide;
a first region between the first waveguide and the third waveguide, wherein;
the first region separates the first waveguide from the third waveguide;
the first region comprises a first material having a first index of refraction;
the first region comprises a second material having a second index of refraction;
the second index of refraction is higher than the first index of refraction;
the second material is different from material of the higher refractive index portion of the first waveguide; and
the second material is different from material of the third waveguide; and
a second region between the second waveguide and the third waveguide, wherein;
the second region separates the second waveguide from the third waveguide;
the second region comprises a third material having a third index of refraction;
the second region comprises a fourth material having a fourth index of refraction;
the fourth index of refraction is higher than the third index of refraction;
the fourth material is different from material of the higher refractive index portion of the second waveguide; and
the fourth material is different from material of the third waveguide.
3 Assignments
0 Petitions
Accused Products
Abstract
A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide. The connecting waveguide includes a first material having a first index of refraction and a second material having a second index of refraction higher than the first index of refraction.
15 Citations
20 Claims
-
1. An integrated waveguide coupler comprising:
-
a first waveguide, the first waveguide comprising; a higher refractive index portion; and a lower refractive index portion, adjacent to the higher refractive index portion of the first waveguide; a second waveguide, the second waveguide comprising; a higher refractive index portion; and a lower refractive index portion, adjacent to the higher refractive index portion of the second waveguide; a third waveguide between the first waveguide and the second waveguide; a first region between the first waveguide and the third waveguide, wherein; the first region separates the first waveguide from the third waveguide; the first region comprises a first material having a first index of refraction; the first region comprises a second material having a second index of refraction; the second index of refraction is higher than the first index of refraction; the second material is different from material of the higher refractive index portion of the first waveguide; and the second material is different from material of the third waveguide; and a second region between the second waveguide and the third waveguide, wherein; the second region separates the second waveguide from the third waveguide; the second region comprises a third material having a third index of refraction; the second region comprises a fourth material having a fourth index of refraction; the fourth index of refraction is higher than the third index of refraction; the fourth material is different from material of the higher refractive index portion of the second waveguide; and the fourth material is different from material of the third waveguide. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of fabricating an integrated waveguide coupler, the method comprising:
-
forming a first material in a first gap, wherein; the first gap is between a first waveguide and a second waveguide; and the first material has a first index of refraction; forming a second material in the first gap, wherein; the second material is formed in the first gap after forming the first material in the first gap; the second material has a second index of refraction; and the second index of refraction is greater than the first index of refraction; forming a third material in a second gap, wherein the second gap is between the second waveguide and a third waveguide; forming a fourth material in the second gap, wherein the fourth material is formed in the second gap after forming the third material in the second gap. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An optical device, the optical device comprising:
-
a first waveguide region configured to support an optical mode; a second waveguide region configured to support the optical mode; a third waveguide region, wherein; the third waveguide region is separated from the first waveguide region by a first separation region; and the third waveguide region is separated from the second waveguide region by a second separation region; a first multilayer waveguide region is disposed in the first separation region, the first multilayer waveguide region comprising; a first material having a first index of refraction; and a second material having a second index of refraction, wherein the second index of refraction is greater than the first index of refraction; and a second multilayer waveguide region disposed in the second separation region, the second multilayer waveguide region comprising; a third material having a third index of refraction; and a fourth material having a fourth index of refraction. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification