| 摘要 |
A geometrically shaped optical waveguide crossing or intersection with minimal transmission loss is described. A symmetrically tapered waveguide intersection is used to minimize loss in the intersecting region where at least two optical waveguides cross one another at 90° or nearly 90°. The present invention embodies a waveguide crossing that includes tapering the width of the waveguides as they approach the intersecting region, forcing the propagating light to contract, thereby reducing asymmetric field distortions, and thus reducing transmission loss and effectively minimizing crosstalk. This is accomplished by focusing the propagating light through a perpendicular or near perpendicular in at least two waveguide intersection by simple linear tapering rather than by the use of a lens or other previously used devices.
|
