Patent ID: 7079741
Filing Date: 2006-07-18
Classification: G02B

Abstract:
1. An optical interconnection circuit board for changing an optical path of an optical signal, comprising: a substrate having a surface; a first clad layer being a flat surface, which is formed on the surface of the substrate; a first core segment configured to guide the optical signal in a first predetermined direction, formed on the flat surface of the first clad layer and extended in the first predetermined direction; a second core segment configured to guide the optical signal in a second predetermined direction, different from the first predetermined direction, formed on the flat surface of the first clad layer and extended in the second predetermined direction; an optical coupling mirror configured to optically couple the first core segment to the second core segment, the optical signal guided in the first core segment being reflected from the optical coupling mirror, the optical coupling mirror being formed on the flat surface of the first clad layer and contacted to the first and second core segments, and extending in a third predetermined direction different from the first and second directions; a second clad layer formed on the first and second core segments and the optical coupling mirror; and a reflection layer formed on the second clad layer, configured to reflect the optical signal from the optical coupling mirror and redirect the optical signal to the optical coupling mirror through the second clad layer, the redirected optical signal being reflected from the optical coupling mirror into the second core segment and propagated in the second core segment.