| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved planar waveguiding device comprising a plurality of optical waveguides and one or more crossover regions where two waveguides intersect at a certain angle. SOLUTION: This invention reduces loss and cross talk caused by a crossover by segmenting the waveguides across the region of intersection. Advantageously, the segments are enlarged in width (as compared to the transmission regions of the waveguide away from the crossover) and so arranged as to slide with respect to the longitudinal axis of the waveguide. In regions where segments intersect, each segment merges into a complex segment having a shape corresponding to the periphery of the segment intersection. COPYRIGHT: (C)2005,JPO&NCIPI |
