Fiber Optic Adapter
Fiber Optic Adapter is an optical fiber connector that can be inserted into different types of interfaces at both ends to realize conversion between different interfaces such as FC, SC, ST, LC, MTRJ, MPO, and E2000. It is widely used in optical fiber distribution frames (ODF) and optical fiber communication equipment. , instruments, etc., performance superior, stable and reliable, while the fiber adapter has a variety of types, so you can achieve different interface conversion, so now it is relatively common type of fiber adapter.
One, FC type
This connector was first developed by Japan NTT. FC is an abbreviation of FERRULE CONNECTOR, indicating that the external reinforcement method is to use metal sleeves and the fastening method is a turnbuckle. The earliest, FC-type connector used the butt-end of ceramic pins. Such a connector has a simple structure, is easy to operate, and is easy to manufacture. However, the end of the optical fiber is relatively sensitive to fine dust, and Fresnel reflection is easy to occur. Therefore, it is difficult to improve the return loss performance. Later, this type of connector was modified to use a pin (PC) with a spherical butted end surface, and the external structure did not change, resulting in a significant increase in insertion loss and return loss performance.
Second, SC type
This is a fiber optic connector developed by NTT Japan. The housing is rectangular, and the pin and coupling sleeve used are of the same size as the FC type. The end face of the pin is mostly PC or APC-type grinding; the fastening method is the use of plug-and-pin latch type, no need to rotate. These connectors are inexpensive, easy to insert and withdraw, have small fluctuations in insertion loss, high compressive strength, and high installation density.
Third, MU type
The MU connector is the world's smallest single-fiber connector developed by NTT based on the SC connector currently used most. The connector features a 1.25mm diameter sleeve and self-retaining mechanism, which has the advantage of enabling high-density mounting. Using MU's L.25MM diameter bushings, NTT has developed MU connector series. They have socket type connectors (MU-A series) for optical cable connection; backplane connectors (MU-B series) with self-retaining mechanism and simplified sockets (MU-SR series) for connecting LD/PD modules and plugs Wait. With the rapid development of larger bandwidth and larger capacity of optical fiber networks and the wide application of DWDM technology, the demand for MU-type connectors will also increase rapidly.