Optical engine

1. An optical engine, comprising:

a fiber joint, having a fiber installation part and an optical signal output part, wherein the fiber installation part is for accommodating a plurality of fibers, the optical signal output part includes a plurality of fiber positioning through holes running through the optical signal part, wherein each of the plurality of fibers plugs into one terminal of each positioning through hole and outputs an optical signal via the other terminal of the positioning through hole;

a fiber pad, disposed on the fiber installation part and having a plurality of fiber guiding grooves which respectively guide the plurality of fibers to the corresponding fiber positioning through holes;

a photoelectric module, assembled to the fiber joint and having a plurality of photoelectric components, wherein each of the photoelectric components is aligned with one of the positioning through holes for converting the optical signals coming from the fiber positioning through holes into electric signals; and

a plurality of positioning components, wherein each of the optical signal output part of the fiber joint and the photoelectric module includes a plurality of positioning holes matching to the plurality of positioning components assembling the fiber joint and the photoelectric module detachably.

2. The optical engine of claim 1 , wherein the fiber installation part comprises at least one first fixing part, and the fiber pad comprises at least one second fixing part matching to the first fixing part on structure to fix the fiber pad to the fiber installation part.

3. The optical engine of claim 1 , wherein at least two of the plurality of fiber guiding grooves have different lengths.

4. The optical engine of claim 3 , wherein the lengths of the plurality of fiber guiding grooves increase or decrease gradually on space.

5. The optical engine of claim 1 , wherein the fiber pad further comprises a plurality of separating islands for separating the plurality of guiding grooves, each of the separating island including two side walls, and a non-zero angle exists between a plane of each of side walls and a tangent line of the corresponding guiding groove wherein the two side walls are on some or all of each of the separating islands at a terminal, away from the fiber positioning through holes, of the separating islands.

6. The optical engine of claim 1 , wherein the photoelectric module further comprises:

at least one amplifier, for amplifying electric signals coming from the plurality of photoelectric components and outputting the amplified signals; and

a plurality of output terminals, for conducting the amplified signals coming from the amplifier.

7. The optical engine of claim 6 , wherein the amplifier and the plurality of photoelectric components are disposed on the same plane or two perpendicular planes of the photoelectric module and electrically connected to each other.

8. The optical engine of claim 1 , wherein the photoelectric module further comprises a plurality of positioning parts each has a positioning component guiding groove and a positioning hole, and the positioning component guiding groove is for guiding and plugging a positioning component into the positioning hole.

9. The optical engine of claim 1 , wherein a plane of a surface of the optical joint fiber joint outputting the optical signals is an inclined plane, and an angle between the inclined plane and a vertical line is between 1 and 6 degrees.

10. The optical engine of claim 8 , wherein the positioning components are discrete components separated from the fiber joint and the photoelectric module before assembling.

11. The optical engine of claim 6 , further comprising:

a plurality of output conducting lines, bent to be disposed on the first surface and a second surface of the photoelectric module, one terminal of each of the plurality of output conducting lines disposed on the first surface and electrically connected to one of the plurality of the photoelectric components, and the other terminal of each of the plurality of output conducting lines disposed on the second surface; and

a circuit board having a plurality of through holes wherein the fiber joint and the photoelectric module are disposed on a top surface of the circuit board, and the plurality of output conducting lines electrically connected to the circuit board;

wherein the amplifier is disposed on a bottom surface of the circuit board and electrically connected to the plurality of output conducting lines via the plurality of through holes.