The present invention provides an adhesive composition for an optical waveguide which comprises (a) an epoxy resin, (b) a curing agent and (c) a high molecular compound, in which a total light transmittance and a light transmittance in a wavelength of 700 to 1600 nm in a cured matter of the adhesive composition are 80 % or more and in which a transparency is consistent with a heat resistance, an adhesive film for an optical waveguide prepared by forming the above adhesive composition into a film form, an adhesive sheet for an optical waveguide comprising the above adhesive composition and a supporting base material and an optical device produced by using them.
本发明提供了一种光波导用粘合剂组合物,该组合物由(a)环氧
树脂、(b)固化剂和(c)高分子化合物组成,在该粘合剂组合物的固化物中,总透光率和波长为700至1600纳米的透光率为80%或以上,并且透明度与耐热性一致、通过将上述粘合剂组合物制成薄膜而制备的光波导用粘合膜,由上述粘合剂组合物和支撑基材构成的光波导用粘合片,以及使用它们生产的光学器件。