| 摘要 |
<p>A rib waveguide structure comprising a layer (4) of light conductive material defined between two planar faces with a rib (9) formed on one of the faces and an optical component, e.g. a tapered waveguide (6) optically coupled to the other face the optical component being separated from the substrate by a layer of light confining material. An inverted rib waveguide comprising a light conductive layer (11) and a rib (10) that projects from the light conductive layer (11) into a substrate (4,.8) is also described as well as other optical devices comprising a light conductive layer separated from a substrate by a non-planar layer (3) of light confining material and optical devices comprising two or more layers (2, 3, 18, 19, 20) of light confining material buried within a rib with a light conducting component (10, 17, 22) at least a part of which is formed between planes defined by the two layers of light confining material. A method of forming such devices is also described.</p> |
