Optical waveguide structure, the optical waveguide-type optical module, and optical fiber array

摘要

I will provide an optical waveguide structure, etc. to reduce than the conventional the fluctuation and the insertion loss of the optical waveguide-type optical module that includes an optical waveguide structure. An optical waveguide structure according to the present invention (6), a substrate that is provided downstream slot and column (8) upstream slot column (10) and (12), upstream slot column (8) downstream slot rows (10) I including (14) an optical waveguide which is laminated on the (12) substrate between. The core of the optical waveguide (14b), and is formed to align at the same level in the vertical direction (2a, 4a) and the core of the optical fiber positioned in the groove groove array of (8, 10), optical fibers (2, For the transmission of light 4) between the upstream port (20) therewith and has a (22) downstream ports, or more of the same number. The ratio of the number of grooves downstream side with respect to the number of grooves on the upstream side is smaller than the ratio of the downstream port number to the upstream port number.