Method for manufacturing optical waveguide

摘要

An optical fiber (1), a mixture solution (2) of the photosetting resins (21,22) polymerizing in two different polymerization types, and a transparent container (3) are prepared. The photosetting resins are not copolymerized, and have different activation wavelengths of the photopolymerization initiators for hardening. Employing a combination in which the activation wavelength of a photopolymerization initiator for a photosetting resin with higher refractive index after hardening is longer than the activation wavelength of a photopolymerization initiator for a photosetting resin with lower refractive index after hardening, a core portion (11) can be only formed by hardening the photosetting resin with higher refractive index due to a difference between two wavelengths. Thereafter, a clad portion (23) can be formed by hardening two kinds of photosetting resins, whereby an optical transmission device can be manufactured. An optical transmission and reception module and method for its manufacture are also disclosed. <IMAGE>