Low-loss Ti:LiNbO3 intersecting waveguides

• DOI: 10.1063/1.101430
• Publication Date: 2002-07-26T09:02:54Z
• Authors: Niraj Agrawal; L. McCaughan
• Keywords: 0103 physical sciences; 01 natural sciences

Interactions between guided and radiation modes are studied experimentally in Ti:LiNbO3 single-mode, single-Δn intersecting waveguides with small angles. These measurements, which cannot be interpreted in terms of any previous theory for intersecting waveguides, can be understood in terms of a recently developed multiple scattering analysis. Furthermore, it is found that the radiation losses in optical switches and crossovers can be dramatically reduced by a fractional doping of the intersection region.