Abstract: The present invention provides a method of fabricating an optical fiber module. The optical fiber module includes an optical device and an optical fiber side connector for connecting with an optical fiber device. In the method of fabricating the optical fiber module, an optical device side connector with a protruding part at its connection surface is provided at first. Next, the optical device side connector is combined and fitted to the optical device, followed by aligning the optical device and the optical fiber side connector. Finally, an electric current is applied to the protruding part of the optical device side connector to weld the optical device side connector and the optical fiber side connector.