Optical waveguide light deflection device, especially for mirror-facet type waveguides, has end faces of waveguides inclined at given angle to respective longitudinal axis to avoid loss of reflection component

摘要

Optical waveguide has end faces (4) of the first and second waveguides inclined to the respective longitudinal axis at an angle of 90 degrees - phi, where phi is the light component propagation angle in the first waveguide, Following the change of direction during reflection in the edge regions, this component of the light also reaches the second waveguide. Optical waveguide is based on a light-deflecting mirror facet (2) for deflecting light into a second waveguide (3) at width D' and avoids loss of part of the reflected light, indicated by a dashed arrow, which is conducted out of the waveguide as associated with the light loss in curved waveguides when the minimum radius of curvature cannot be met.