At present, compared with common optical fiber connector:
( 1) FC type optical fiber connector this connector is the first by the Japanese NTT development. Ferrule Connector FC showed that the abbreviations, external reinforcement is a metal sleeve, fastening means for turnbuckles. The connector has the advantages of simple structure, convenient operation, easy fabrication, but the fiber end face dust are more sensitive, and easy to generate the Fresnel reflection echo loss, improve the consumption performance is more difficult. Later, on the type of connector is improved, the butt end with a spherical pin ( PC ), while the external structure is not changed, the insertion loss and return loss performance has greatly improved.
( 2) type SC fiber optic connector which is composed of a NTT Japan developed optical fiber connector. Its shell is a rectangle, the pin and the coupling sleeve structure size and type FC exactly the same,. The pin end use PC or APC type abrasive manner; fastening means is the use of plug pin latch type, without rotating. The connector plug has the advantages of convenient operation, low price, small insertion loss fluctuation, high compressive strength, high mounting density. ST and SC interface is a two optical fiber connector types, for the 10Base-F connection, the connector is typically a ST type, for example 100Base-FX, connector in most cases of SC types. ST core SC connector connector exposed, the core in the joint.
( 3) double cone type connector ( Biconic Connector ) this kind of optical fiber connector in the most representative products from the United States Baer lab is developed, which consists of two precision molded end conical cylinder plug and an interior is equipped with dual taper plastic sleeve coupling component.
( 4) type DIN47256 fiber optic connector which is composed of a German development of connector. This connector is used with the pin and the coupling sleeve structure size and type FC identical, end by using PC grinding method. Compared with FC type connector, its structure is complex, the internal structure of the metal in a controlled pressure spring, can avoid
From inserted end of excessive pressure damage. In addition, this connector high precision machinery, so the smaller value of insertion loss.
( 5) type MT-RJ connector for MT-RJ started in NTT development MT connector, and electric connector with type RJ-45 LAN same latch mechanism mounted on the sides of the casing, through a small guide pins for aligning the optical fiber for light, and connected to the transceiver, optical fiber connector end face dual core ( 0.75mm interval arrangement. ), is mainly used for data transmission of the next generation of high density optical fiber connector.
( 6) type LC connector type LC connector is famous Bell ( Baer ) research and development, with easy modular jack ( RJ ) latch mechanism into. The pin and sleeve size is SC, FC used by half a size, 1.25mm. It can improve the fiber distribution in the line frame optical fiber connector density. At present, in the single mode SFF, LC type of connector is to occupy a dominant position, in the multi-mode applications is also growing rapidly.
( 7) type MU connector for MU (Miniature unit Coupling ) connector is currently the most frequently used SC type connector for the foundation, by NTT developed the world's smallest single core optical fiber connector, the connector uses 1.25mm diameter of the casing and the maintaining mechanism.
Its advantage is to achieve high density of installation. The use of MU l.25mm diameter of the casing, NTT has developed the MU connector series. They are used in fiber optic cable connecting socket type connector ( MU-A Series ); with self retaining mechanism ( MU-B Series ) and the connector used to connect to the LD / PD module and the plug in the socket ( MU-SR Series ) and simplified. With the development of optical fiber network to the larger greater bandwidth capacity direction rapid development and the widespread application of DWDM technology, the MU type connector demand also will increase quickly. Optical fiber distribution box distribution box for optical fiber cable and optical communications equipment and wiring connection, through the wiring box adapter, optical jumper leads to optical signals, realize the optical distribution function. Also suitable for optical cable and wiring pigtail protective connection.