Embedded mode converter
First Claim
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1. An optical mode transformer, comprising:
- a low index core;
a high index core having a first tapered region, wherein the high index core is embedded within the low index core and wherein the low index core serves as a cladding for a waveguide defined by the high index core embedded in the low index core; and
a cladding layer surrounding the low index core, wherein the cladding layer is composed of one or more materials with different refractive indices than those of the low index core and high index core, wherein a first channel-like mode defined by the low index core and cladding layer gradually transforms into a second channel-like mode defined by the high index core embedded within the low index core, wherein the low index core increases in dimension while embedding the high index core, wherein the dimension of the low index core is increased to a slab waveguide region that forms the cladding.
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Abstract
An optical mode transformer. The optical mode transformer features a low index core, a high index core having a first tapered region, with the high index core embedded within the low index core and with the low index core serving as a cladding for a waveguide defined by the high index core embedded in the low index core, and a cladding layer surrounding the low index core, with the cladding layer including one or more materials with different refractive indices than those of the low index core and high index core.
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Citations
35 Claims
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1. An optical mode transformer, comprising:
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a low index core;
a high index core having a first tapered region, wherein the high index core is embedded within the low index core and wherein the low index core serves as a cladding for a waveguide defined by the high index core embedded in the low index core; and
a cladding layer surrounding the low index core, wherein the cladding layer is composed of one or more materials with different refractive indices than those of the low index core and high index core, wherein a first channel-like mode defined by the low index core and cladding layer gradually transforms into a second channel-like mode defined by the high index core embedded within the low index core, wherein the low index core increases in dimension while embedding the high index core, wherein the dimension of the low index core is increased to a slab waveguide region that forms the cladding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An optical device, comprising:
two or more optical mode transformers, with each optical mode transformer comprising;
a low index core;
a high index core having a first tapered region, wherein the high index core is embedded within the low index core and wherein the low index core serves as a cladding for a waveguide defined by the high index core embedded in the low index core; and
a cladding layer surrounding the low index core, wherein the cladding layer is composed of one or more materials with different refractive indices than those of the low index core and high index core, wherein a first channel-like mode defined by the low index core and cladding layer gradually transforms into a second channel-like mode defined by the high index core embedded within the low index core, wherein two or more of the low index cores of the optical mode converters are connected to a single slab waveguide region that forms the cladding for the waveguides defined by the high index cores embedded in the low index cores. - View Dependent Claims (28, 29, 30)
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31. A dielectric waveguide optical mode transformer, comprising:
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a first dielectric channel waveguide including a first core material surrounded by a cladding layer;
a second dielectric channel waveguide including a second core material having a first tapered region forming one end of the second dielectric channel waveguide, the second core material being embedded within the first core material, wherein the first core material tapers outward to increase in dimension and acts as a cladding for the second dielectric channel waveguide having the second core material, wherein the dimension of the first core material is increased to a slab waveguide region that forms the cladding for the second dielectric channel waveguide. - View Dependent Claims (32, 33)
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34. A dielectric waveguide optical mode transformer, comprising:
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a first dielectric channel waveguide including a low index core surrounded by a cladding layer;
a second dielectric channel waveguide including a high index core embedded at least partially within the low index core, wherein the low index core acts as a cladding for the second dielectric channel waveguide having the high index core; and
a transformer region, the transformer region being between the first dielectric channel waveguide and the second dielectric channel waveguide, wherein, in the transformer region, the high index core extends from the second dielectric channel waveguide and tapers downward to decrease in dimension so that the high index core has one end within the transformer region near the first dielectric channel waveguide, and wherein the low index core material extends from the first dielectric channel waveguide into the transformer region, embeds the high index core, and tapers outward to increase in dimension near the second dielectric channel waveguide, wherein the low index core extends beyond the taper of the high index core in the transformer region and forms the cladding for the second dielectric channel waveguide in a region beyond the transformer region in the second dielectric channel waveguide. - View Dependent Claims (35)
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Specification