Optical communication apparatus includes a printed circuit board (PCB), a photoelectric unit electrically connected to the PCB, a supporting member positioned on the PCB, a coupler supported on the supporting member, and an optical fiber unit. The coupler optically couples the photoelectric unit to the optical fiber unit. The supporting member defines a through stepped hole having a larger first hole and a smaller second hole. The supporting member includes a step portion between the first hole and the second hole. The second hole is closer to the PCB than the first hole. The supporting member defines a number of positioning holes, and the coupler comprises a number of positioning poles corresponding to the positioning holes. The coupler is connected to the supporting member by inserting the positioning poles into the corresponding positioning holes.

光通讯模组（包括光发射端、光耦合透镜和光接收端）在制程上皆采用被动式封装，由于被动式封装无法直接透过显微镜观察光耦合透镜与光发射端或光接收端对位之情况，使得点胶固化后之光发射端、光耦合透镜和光接收端之间只相对位置存在偏差，此对位偏差会使光通讯模组的耦合效率降低。