What are common optical fiber connector?

optical fiber connector according to the different can be divided into common transmission medium silicon-based single-mode and multimode optical fiber connectors, and other such as such as plastic optical fiber connector for transmission medium; According to the connection head structure can be divided into: FC, SC, ST, LC, DIN, MU, MT, etc. Various forms.

( 1) FC type optical fiber connector

the earliest, FC type of connector used ceramic the butt end of the pin. Such connector has simple structure, convenient operation, easy, but the dust sensitive optical fiber end face, and prone to Fresnel reflex, is difficult to improve properties return loss.

later, made improvement for this type of connector, use the butt end of spherical pin ( PC) Has not changed, and the external structure, makes the insertion loss and return loss performance has improved significantly.

( 2) SC type optical fiber connector

this kind of optical fiber connector shell rectangular, adopted by the pin and the structure of the coupling sleeve size and FC is exactly the same type. The end face of the pin is used more PC or APC model grinding way; Fastening way is to use plug pin bolt type, does not need to rotate. This kind of connector price is low, plug is easy to operate, small ripple in loss, high compressive strength, high density installation.

( 3) ST type optical fiber connector

ST and SC interface is optical fiber connector, two types of about 10 base - F the connection, the connector is usually ST type, the base - 100 FX, connectors, in most cases for SC type. ST connector of the core is exposed, SC connectors core inside the joint.

( 4) LC type connector

this kind of connector the pin and the size of the sleeve is adopted by the general SC, FC, half size of 1. 25毫米。 This can increase the density of optical fiber connector in the optical fiber distribution frame. At present, in terms of single-mode SFF, LC type of connector has occupied the dominant position, actual application in the field of multimode is also growing rapidly.

( 5) DIN47256 type optical fiber connector

this is a kind of developed by German connector. This kind of connector USES the pin and the structure of the coupling sleeve size is the same as the FC type, end face using PC grinding processing ways. Compared with FC type connector, its structure is more complicated, internal pressure of the spring, metal structure of control can be avoided by end plug stress and damage. In addition, this kind of connector mechanical precision, and thus involved in smaller values of the loss.

( 6) MT - RJ type connector

MT - RJ by installing in small casing on both sides of the guide pin on the optical fiber, to facilitate connected to the optical transceiver, double core of fiber-optic connector end face ( Interval 0. 75毫米) Alignment design, is mainly used for data transmission for the next generation of high density optical fiber connector.

( 7) MU type connector

MU connector is currently the most used type SC connector as the foundation, developed by NTT, out of the world's smallest single core optical fiber connector. The connector by 1. 25 mm diameter of casing and the institution, its advantage is to achieve high density installation. The use of MU l. 25 mm diameter of casing, NTT has developed a MU connector series.

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