| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure which is suitable for manufacture of a core connecting many arbitrary points. SOLUTION: An optical waveguide has a plurality of cores held by a clad, and the extension direction of two linear waveguides included in a 1st core are made to nearly match with the extension direction of linear waveguides included in the other core. At an intersection of linear waveguides, an in-surface mirror for connecting them is provided and at a waveguide end, an oblique mirror for connection with an external element is provided. Consequently, area needed for direction conversion can be made small. Directions of a linear waveguide group are limited to two kinds and then directions of the in-plane mirrors and oblique mirrors can be limited to four kinds to facilitate processing. The width of the in-plane mirror and the oblique mirror are made wide to reduce loss. COPYRIGHT: (C)2005,JPO&NCIPI |
