Patent ID: 7478954

Claim:
A method for connecting optically an optical transmitter and an optical receiver, comprising the steps of: forming a light source device, an optical detection device, an optical transmission unit, and an optical detection unit on a substrate, wherein the optical transmission unit is electrically connected to the light source device, and the optical detection unit is electrically connected to the optical detection device; preparing a flexible optical transmission-connection medium for carrying optical signals so as to optically connect the light source device to the optical detection device, wherein the optical transmission-connection medium is a plastic optical fiber or a flexible optical waveguide; cutting the prepared optical transmission-connection medium using a cutting device and thermally annealing a cut end of the optical transmission-connection medium using a soldering iron; and directly connecting one end of the optical transmission-connection medium to the light source device and directly connecting the opposite end to the optical detection device, wherein the direct connection comprises an adhesive and no separate optical connection device.