| 摘要 |
A method for manufacturing an optical waveguide (10) includes the steps of: A) forming a liquid-state resin mass (16) by adding dropwise a liquid-state resin (14) on an under-cladding layer (11); B) forming a liquid-state resin layer (18) to cover cores (12) by pressing a mold (17) on the liquid-state resin mass (16) and applying the liquid-state resin (14) to be expanded on the under-cladding layer (11); and C)curing the liquid-state resin layer (18) and then releasing the mold (17), wherein the liquid-state resin (14) added dropwise has a viscosity of 500 to 2,000 mPa·s and the rate at which the liquid-state resin (14) is applied to be expanded is 10 to 50 mm/s.
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