An optical communication module for communicating a light signal including
a groove portion whose section is V-shaped and provided on the surface of
an optical waveguide substrate, on one of two surfaces of which groove
portion a mirror is formed by the coating with a metal film and in the
vicinity of the other surface of which groove portion, a tip of an optical
waveguide on the optical waveguide substrate is provided, whereby a signal
light guided by the optical waveguide is reflected by the mirror of the
metal film so as to be incident on a light-receiving element disposed on
the surface of the optical waveguide substrate.
