Optical module

An optical module comprising:

• a block attached to an end part of an optical fiber, the block including a front face from which a tip face of the optical fiber is exposed;
• a waveguide substrate in which an optical waveguide is embedded, the waveguide substrate including a side face from which a tip face of the optical waveguide is exposed, the side face facing the front face of the block, a top part of the front face protruding upward from the side face, the optical fiber and the optical waveguide aligning on a coinciding optical axis;
• a base substrate including a top face to which a bottom face of the waveguide substrate is fixed, the base substrate including a sticking-out part protruding under the block from the waveguide substrate, the top face facing the bottom face of the block;
• and
• an adhesive bonding the block to the waveguide substrate and the base substrate,
• the adhesive including a top segment located at a corner section delineated by the top part of the front face of the block and a top face of the waveguide substrate, the adhesive including a middle segment interposed between the front face of the block and the side face of the waveguide substrate, the adhesive including a bottom segment interposed between the bottom face of the block and a top face of the base substrate.