| 摘要 |
A planar optical component (10) having a relatively high refractive index waveguide that is capable of being coupled to a standard optical fiber or other standard optical waveguide having a relatively low refractive index waveguide exhibits reduced loss of signal as compared with conventional planar optical components having a high refractive index waveguide. The component includes a waveguide which includes a first waveguide segment (24) having a core material (18) with a first refractive index, and a transition waveguide segment (26) between the first (24) and second (27) waveguide segments. The transition waveguide segment (26) includes a core material (18) with the first refractive index and a core material (14) with the second refractive index. The first and second core materials (18, 14) have an interface that is sloped or tapered (16, 17) at an acute angle relative losses between the core materials having different refractive indices.
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