Patent ID: 8113724

Claim:
An optical communication module comprising: a printed circuit board including an electrode pad; sub-mount substrates including a bottom surface electrode which is bonded to the electrode pad, a light-emitting element, a light-receiving element, and a laterally placed side surface electrode to which an anode and a cathode of the light-emitting or the receiving element are bonded by wire bonding, in which one or both the light-emitting element and the light-receiving element being mounted on a side surface of the sub-mount substrates; and an optical waveguide provided between the light-emitting element and the light-receiving element so as to be able to be optically coupled with the light-emitting element and the light-receiving element, wherein the light-emitting element and the light-receiving element are mounted on the printed circuit board with the sub-mount substrate therebetween such that the light-emitting and -receiving directions of the elements are parallel to the printed circuit board, and the light-emitting element and the light-receiving element of the sub-mount substrate and ends of the optical waveguide adjacent to the elements are covered by a resin.