Optical communication apparatus having coupler and supporting member connected together

1. An optical communication apparatus, comprising:

a PCB;

a photoelectric unit electrically connected to the PCB;

a supporting member fixedly positioned the PCB, the supporting member defining a through stepped hole comprising a larger first hole and a smaller second hole, the supporting member comprising a step portion between the first hole and the second hole, the second hole being closer to the PCB than the first hole, the photoelectric unit being exposed in the stepped hole;

a coupler engaged into the first hole and supported on the step portion; and

an optical fiber unit, the optical fiber unit and the photoelectrical unit being optically coupled to each other by the coupler;

wherein the supporting member defines a plurality of positioning holes, the positioning holes are located at two opposite ends of the second hole, the coupler comprises:

a plurality of positioning poles corresponding to positioning holes,

a bottom portion of each positioning hole is wedged,

a distal end of each positioning pole is wedged corresponding to the bottom portion of a corresponding positioning hole, the distal end is inclined to the step portion of the coupler, the coupler is connected to the supporting member by inserting the positioning poles into the corresponding positioning holes, and

the wedged distal ends of the positioning poles are respectively engaged with the

wedged bottom portions of the positioning holes.

2. The optical communication apparatus of claim 1 , wherein the photoelectric unit comprises a plurality of emitters for emitting optical signals and a plurality of receivers for receiving optical signals.

3. The optical communication apparatus of claim 2 , wherein the emitters and the receivers are arranged along a linear direction.

4. The optical communication apparatus of claim 2 , wherein the emitters are laser diodes, and the receivers are a photodiodes.

5. The optical communication apparatus of claim 2 , wherein the coupler comprises a first surface facing toward the PCB, a second surface, and a third surface, the third surface is configured for reflecting optical signals between the first surface and the second surface.

6. The optical communication apparatus of claim 2 , wherein the coupler comprises a plurality of first lenses corresponding to the emitters and a plurality of second lenses corresponding to the receivers, the first lenses and the second lenses are formed on the first surface.

7. The optical communication apparatus of claim 6 , wherein an optical axis of each of the first lenses and the second lenses is perpendicular to the first surface.

8. The optical communication apparatus of claim 6 , wherein the coupler comprises a plurality of third lenses corresponding to the first lenses and a plurality of fourth lenses corresponding to the second lenses, the third lenses and the fourth lenses are formed on the second surface.

9. The optical communication apparatus of claim 8 , wherein an optical axis of the each of the third lenses and fourth lenses is perpendicular to the second surface.

10. The optical communication apparatus of claim 1 , wherein the PCB is selected from one of a group consisting of a flexible PCB, a rigid PCB, and a rigid-flex compound PCB.

11. The optical communication apparatus of claim 1 , wherein the positioning holes are defined in a surface of the step portion, and the positioning poles are formed on a surface of the coupler facing toward the PCB.

12. The optical communication apparatus of claim 1 , wherein the supporting member defines a groove in the step portion, the groove is configured for containing an adhesive for adhering the coupler to supporting member.

13. The optical communication apparatus of claim 12 , wherein the groove extends surrounding the second hole.

14. The optical communication apparatus of claim 12 , wherein the groove extends across the positioning holes.