Optical switch
AssigneeSumitomo Electric Industries, Ltd.
InventorsMakoto Katayama, Manabu Shiozaki, Masayuki Nishimura, Tomohiko Kanie
Life of this patent
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Abstract
An optical switch that can restrain the occurrence of cross talk is provided. A first waveguide path 11 and a second waveguide path 12 are provided on a waveguide substrate PCL so as to intersect each other at a given angle. A trench T is formed in a straight line in the surface of the waveguide substrate PCL so as to cross the central axes of the first waveguide path and the second waveguide path. The trench T is as deep as to expose the whole end face of the first waveguide path and the second waveguide path. The first waveguide path 11 and the second waveguide path 12 are arranged such that their central axes are arranged asymmetrically with respect to the straight line.
Claims4
An optical switch comprising a substrate, a first waveguide path provided on the substrate, and a second waveguide path provided on the substrate so as to intersect the first waveguide path, wherein a trench is provided at the part where the first waveguide path and the second waveguide path intersect each other, the trench being as deep as to expose the whole end face of the first waveguide path and the second waveguide path,
- the first waveguide path and the second waveguide path being arranged such that the central axes thereof are positioned at different angles at the part adjacent to the trench with respect to a straight line extending in an orthogonal direction relative to the side face of the trench.
Dependencies are inferred from the claim text.