| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce light returning to a first optical path in an optical component which controls the power of light which propagates from the first optical path to a second optical path. <P>SOLUTION: A mirror which is an optical component moves in the direction which intersects with the bisector of the angle between a first optical axis of the first optical path combined with a first optical waveguide of a planar light wave circuit and a second optical axis of the second optical path combined with a second optical waveguide of the planar light wave circuit. The reflection part of a mirror surface has an edge including a part which is arranged on a plane substantially perpendicular to the bisector. This part of the edge has a distribution that the function Rav(X) defined by Rav(X)=∫R(X,Y)×Φ(Y)dY/∫Φ(Y)dY varies at least from 10 to 90% between two different X-coordinate points (X is the coordinate in the X-axis direction extending along the nodal line of the plane including the first and the second optical axes and the reflection part, Y is the coordinate in the Y-axis direction extending perpendicularly to the X-axis on the reflection part, R(X,Y) is the reflectance distribution on X-Y plane, andΦ(Y) is the intensity distribution in Y-direction of light which is made incident from the first optical path to the reflection part). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
