Patent ID: 8610887

Claim:
A method for testing of an optical fiber precisely positioned on a jumper, the jumper comprising a main body, the main body comprising a front surface, a back surface opposite to the front surface, and a top surface perpendicularly connecting the front surface and the back surface, the jumper defining a positioning groove in the top surface, running along a direction that is substantially perpendicular to the front surface and through the back surface, the jumper also defining a first through hole in the front surface, extending along that direction that is substantially perpendicular to the front surface to communicate with the positioning groove, the jumper forming a first locating structure in the front surface, the optical fiber positioned in the positioning groove and having a coupling end inserting through the first through hole, the method comprising: providing a testing device, the testing device comprising a slat and defining a second through hole in the slat and corresponding to the first through hole in shape and position, a diameter of the second through hole being equal to a sum of a diameter of the first through hole and the position tolerance of the optical fiber, the testing device also comprising a second locating structure; locating the testing device on the jumper by engagement between the first locating structure and the second locating structure such that the second through hole is aligned with the first through hole; and determining that the optical fiber is precisely positioned when a whole contour of the coupling end of the optical fiber is seen through the second through hole along a depth direction of the second through hole.