Patent ID: 9739942
Date: 2017-08-22
CPC Classifications: G02B

Claim:
1. A method for manufacturing an optical circuit board, comprising: forming an optical waveguide having a structure that a core is sandwiched between a lower clad layer and an upper clad layer so as to extend along an upper surface of a glass plate, and forming a glass plate-side positioning mark composed of a same material as the core, between the lower clad layer and the upper clad layer in a region other than the core; forming a reflection surface at a part of the core by cutting the core, the reflection surface being constituted by a cut surface that is perpendicular to an extension direction of the optical waveguide, has a certain angle with respect to the upper surface, and extends from an upper surface of the core to a lower surface of the core; preparing a wiring board having, on an upper surface thereof, a board-side positioning mark corresponding to the glass plate-side positioning mark and formed so as to protrude from the upper surface thereof; and mounting the glass plate, having the optical waveguide formed thereon, on the upper surface of the wiring board so that the glass plate-side positioning mark and the board-side positioning mark are superimposed on each other and so that an upper surface of the board-side positioning mark and a lower surface of the glass plate are contacted with each other.