Patent ID: 7165898

Claim:
An optical module comprising: a resin case type plastic package having a base and a cap, a lead frame formed integrally with said base, a die pad extended from said lead frame, a cavity formed mainly by said base and said cap, a substrate mounted on said die pad, optical devices mounted on said substrate, wherein a V groove is provided in said base, the base having a first U groove, a second U groove and a projection, and the projection is formed between said cavity and the second U groove, and the first U groove is provided in the projection, an optical fiber having a bare fiber portion and a jacket covering portion covering the bare fiber portion; the bare fiber portion being fixed to the V groove and the first U groove; the jacket covering portion being fixed to the second U groove, wherein each depth of the first and second U grooves is formed so that the height of fiber increases from extreme end thereof at the V groove portion to the U Groove, and said optical fiber is fixed so that said optical fiber has flexure at the portion between the V groove and the second U groove, and said optical devices and the extreme end of said optical fiber are encapsulated with transparent silicon resin gel.