Low-loss Ti:LiNbO3 intersecting waveguides

Agrawal, Niraj; McCaughan, L.
April 1989
Applied Physics Letters;4/24/1989, Vol. 54 Issue 17, p1669
Academic Journal
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.


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