Optical waveguide with overlapping diffusion regions containing

Details Optical waveguide with overlapping diffusion regions containing Optical waveguide with overlapping diffusion regions containing

1994-02-07

1995-07-11

Bovernick, Rodney B.

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385 14, 385129, G02B 610

Patent

active

054328810

ABSTRACT:
A first region diffused with a first diffusion material containing at least one element and a second region diffused with a second diffusion material containing at least another element are formed in a substrate. At least part of the second region overlaps part of the first region. A region of the first region which does not overlap the second region has a refractive index higher than that of a region where the first region overlaps the second region and that of the substrate. The region of the first region which does not overlap the second region serves as a core for propagating a light beam. The region where the first region overlaps the second region and the region of the substrate not diffused with the first and second diffusion materials serve as a clad.

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