| 摘要 |
(1) A method for producing a flexible optical waveguide, containing: a step of forming a first cladding layer; a step of forming a first core layer by laminating a resin film for forming a core layer on at least one end portion of the first cladding layer; a step of forming a second core layer by laminating a resin film for forming a core layer on an entire surface of the first core layer and the first cladding layer; a step of forming a core pattern by patterning the first and second core layers; and a step of embedding the core pattern by forming a second cladding layer on the core pattern and the first cladding layer, (2) a flexible optical waveguide containing a lower cladding layer, a core part and an upper cladding layer, the upper cladding layer having a width that is smaller than a width of the lower cladding layer at least in a bent portion, and is equal to or smaller than a width of the lower cladding layer in an end portion, and the lower cladding layer having a width in a bent portion that is equal to or smaller than a width thereof in an end portion, and a method for producing the same. A flexible optical waveguide that is excellent in bending durability and has small optical loss, and a method for producing the same. |
