Performance of optical fiber connector
The performance of the optical fiber connector, first of all, the optical performance, in addition to the interchangeability, repeatability, tensile strength, temperature and insertion and removal times of the optical fiber connector.
(1) Optical performance: The requirements for optical performance of optical fiber connectors are mainly the two most basic parameters of insertion loss and return loss.
Insertion loss (InsertionLoss) is the connection loss, which refers to the loss of the effective optical power of the link caused by the introduction of the connector. The smaller the insertion loss, the better, and the general requirement should be no more than 0.5dB.
Return loss (ReturnLoss, ReflectionLoss) refers to the ability of the connector to suppress the reflection of the optical power of the link, and its typical value should not be less than 25dB. In the practical application of the connector, the surface of the pin has been specially polished, which can make the return loss larger, generally not less than 45dB.
(2) Interchangeability and repeatability
Optical fiber connectors are general passive devices. For the same type of optical fiber connectors, they can generally be used in any combination and can be used repeatedly. The additional loss introduced by this is generally within the range of less than 0.2dB. (3) Tensile strength
For a well-made fiber optic connector, it is generally required that its tensile strength should not be less than 90N.
As a general requirement, fiber optic connectors must be able to be used normally at a temperature of -40oC~+70oC.
(5) times of plugging and unplugging
The fiber optic connectors used can basically be plugged and unplugged more than 1000 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.
Introduction to optical fiber connector
Optical fiber connectors can be divided into common single-mode and multi-mode connectors of silicon based optical fiber according to different transmission media, as well as other optical fiber connectors using plastic as transmission media; According to the connector structure, it can be divided into FC, SC, ST, LC, D4, DIN, MU, MT, etc.