Multichannel opticalcommunication module and method of producing multichannel opticalcommunication module

A method of producing a multichannel optical communication module, comprising:

• fixing, on a board, a signal-converting element that has a plurality of optical-action points aligned with a predetermined first pitch to emit and receive signal light and performs conversion between an optical signal and an electric signal at each of the optical-action points to connect electrically the signal-converting element to the board;
• fixing, on the board, an optical-connector coupling component to be joined to an optical connector that holds ends of a plurality of optical fibers aligned with a second pitch longer than the first pitch;
• and
• disposing, on the signal-converting element and the optical-connector coupling component fixed on the board, an optical waveguide that includes a plurality of optical waveguide cores each having a first optical-signal end and a second optical-signal end that are opposed to each other, the first optical-signal ends being aligned with a pitch equal to the first pitch and to be optically connected to the respective optical-action points, while the second optical-signal ends being aligned with a pitch equal to the second pitch.