Performance of Maofeng precision optoelectronic accessories jumper
For jumpers, an important performance is the performance problem when bending. Since UTP twisted pairs are generally solid cores, they are poor in manageable performance. First, the cable is relatively hard, which is not conducive to bending. Second, the solid core cable will have obvious return loss when it is bent, which will cause the performance of the cable to decline. Therefore, the solid core cable generally has a bending radius of clear requirements. For flexible cables with multi-strand cores specially used to manage jumpers, these problems are not present.
As an important part of the wiring system, the jumper wire has not been paid attention to. The test problem of jumper is only mentioned in the standard in the past two years.
①TIA/EIA-568-A-4-1999: Propagation Delay and Delay Deviation Specification for 100 Ohm 4-Pair Cable
②TIA/EIA-568-A-5-2000: 100 Ohm 4-pair Enhanced Category 5 Wiring Specifications
③TIA/EIA-568-B Part 2: 100Ω balanced twisted pair component standard
Several successively published standards deal with the jumper test methods and requirements of Ca.5 and Cat.5e respectively. The TIA/ELA-568B.2-1 six types of wiring standard have made specific requirements for the jumper.
The original jumper has a rigorous process and is designed with multi-strand flexible wires, which can withstand repeated plugging and unplugging times.
Domestic situation of optical fiber connector
At present, with the continuous development of the domestic communication industry, optical fiber communication has entered the stage of practical application, and the scope of application is getting wider and wider. For optical fiber connectors used in optical communication systems in my country, either imported connectors are used, or so-called "parts" such as imported ceramic sleeves and peripheral metal parts are assembled in China, or according to the imported foreign technology and Key equipment is produced, mainly FC-type fiber optic connectors. In view of this situation, the author recommends the following.
General structure of optical fiber connector
The main purpose of fiber optic connectors is to connect optical fibers. Optical fiber connectors, which have been widely used in optical fiber communication systems, have many types and different structures. But on closer inspection, the basic structure of various types of fiber optic connectors is the same, that is, most fiber optic connectors are generally realized by high-precision components (composed of two pins and a coupling tube). Alignment of optical fibers.