Optical fiber jumper is the most used fiber optic cable line equipment in the modern communication industry. Because of its long connection distance, low insertion loss, good repeatability and not a lot of return loss, it can support the work of multiple devices at the same time, and can be inserted into each other. Good performance, no heat, good temperature stability. Optical fiber jumpers are suitable for cable TV networks, telecommunication networks, computer optical fiber networks and optical test equipment.

Due to the needs of switching fiber jumpers during maintenance and normal testing, fiber optic connectors are often plugged and unplugged, which leads to the problem of plugging life, that is, the maximum number of times of plugging and unplugging. This question should be based on the premise that under normal use conditions, the optical fiber connector has no mechanical damage to the components after a specified number of insertions and withdrawals, and the additional loss does not exceed the limit (usually the limit is specified as 0.2dB). The plugging life of a fiber optic connector is generally determined by the mechanical wear of the components. At present, the plugging life of optical fiber connectors can generally reach more than 1000 times, and the additional loss does not exceed 0.2dB. For fiber optic connectors using slotted ceramic coupling sleeves, static fatigue will cause the sleeve to rupture due to crack growth in the ceramic material. According to relevant information, the 20-year rupture probability of such unscreened sleeves is 10 -4 . If the screening test is performed with a screening force 2.6 times greater than the working stress, cracking will not occur within 20 years.