Optical signal transmission device

An optical transmission device, comprising:

• a first photoelectric converting device converting electrical signals from a first electronic device into optical signals, and converting received optical signals into electrical signals, the first photoelectric converting device comprises a first body, the first body comprises a first fixed surface, the first fixed surface defines a first housing groove;
• a second photoelectric converting device converting electrical signals from a second electronic device into optical signals, and converting received optical signals into electrical signals, structure of the second photoelectric converting device is the same as the first photoelectric converting device, the second photoelectric converting device comprises a second fixed surface, the second fixed surface defines a second housing groove, the second housing groove defining a second recess at a central portion of the second housing groove, the second condensing lenses being exposed from the second recess;
• a first connector comprising a first carrying portion and a first protrusion portion extending outward from the first carrying portion, a size of the first protrusion portion matches with the first housing groove, the first carrying portion includes two first carrying surfaces opposite to each other, each of the first carrying surfaces defines a plurality of first fixed grooves, the first fixed grooves are substantially parallel to each other;
• a second connector, structure of the second connector is the same as the first connector, and comprising a plurality of second fixed grooves, the second fixed grooves are substantially parallel to each other;
• a plurality of first optical fibers comprising a first end and an opposite second end;
• a plurality of second optical fibers comprising a third end and an opposite fourth end;
• and
• an adapter module comprising a first adapter portion and a second adapter portion, wherein the first adapter portion comprises a plurality of third fixed grooves, the third fixed grooves are substantially parallel to each other;
• wherein the second adapter portion comprises a plurality of fourth fixed grooves, the fourth fixed grooves are substantially parallel to each other;
• wherein the first end is fixed in the corresponding first fixed groove, the second end is fixed in the corresponding fourth fixed groove, the third end is fixed in the corresponding second fixed groove, the fourth end is fixed in the corresponding third fixed groove;
• and
• wherein the first photoelectric converting device further comprises a plurality of first condensing lenses corresponding to the plurality of first ends;
• the second photoelectric converting device further comprises a plurality of second condensing lens corresponding to the plurality of third ends;
• the first connector further comprises a plurality of first optical coupling lenses corresponding to the plurality of first ends;
• the second connector further comprises a plurality of second optical coupling lenses corresponding to the plurality of third ends;
• the plurality of first optical coupling lenses are aligned with the plurality of first condensing lenses to complete an optical coupling, the plurality of second optical coupling lenses are aligned with the plurality of second condensing lenses to complete an optical coupling.