PHOTOSENSITIVE RESIN COMPOSITION FOR OPTICAL WAVEGUIDE FORMATION AND OPTICAL WAVEGUIDE

摘要

A photosensitive resin composition for optical waveguide formation which comprises (A) a novolak epoxy resin and (B) a photo-acid generator. The composition is used as, e.g., a material for a core part (5) of an optical waveguide (1). The ingredient (A) in the composition is represented by, e.g., the following general formula (1): (wherein R<1> represents hydrogen or C1-12 alkyl or aralkyl; and n is an integer of 0 to 10). The composition is excellent in suitability for patterning in curing, etc. and gives a cured resin excellent in heat resistance, transmission characteristics, long-term reliability, etc. in the optical waveguide formed.