ST-ST  SM  SX  Bare Fiber with tube  Fiber Optic Patch Cord/Patch Cable

I. Description:

A patch cord is a fiber optic cable used to attach one device to another for signal routing. Normally, there are 4 types connector: FC/SC/LC/ST.. 3types ferrule: PC, UPC, APC…

FC stands for Fixed Connection. It is fixed by way of threaded barrel housing. FC connectors are generally constructed with a metal housing and are nickel-plated.

SC stands for Subscriber Connector- a general purpose push/pull style connector. It is a square, snap-in connector latches with a simple push-pull motion and is keyed.

LC patch cord is a fiber optic cable used to attach one device to another for signal routing. LC stands for Lucent Connector. It is a small form-factor fiber optic connector, half the size of the SC. 

 ST stands for Straight Tip- a quick release bayonet style connector. ST connectors are cylindrical with twist lock coupling. They are push-in and twist types

PC stands for Physical Contact.With the PC connector, the two fibers meet as they do with the flat connector, but the end faces are polished to be slightly curved or spherical. This eliminates the air gap and forces the fibers into contact 

UPC stands for Ultra Physical Contact.The end faces are given an extended polishing for a better surface finish. These connectors are often used in digital, CATV, and telephony systems. 

APC stands for Angled Physical Contact The end faces are still curved, but they’re angled at an industry-standard eight degrees. This maintains a tight connection. These connectors are preferred for CATV and analogue systems. 

II. Features:

Complying with IEC, Telcordia GR-326-CORE, YD-T 1272.3-2005,standard.
Low insertion loss, high return loss
High dense connection, easy for operation
High credibility and stability
Good in repeatability and exchangeability

III. Application: 
Testing equipment
FTTX+LAN
Optical fiber CATV
Optical communication system 
Telecommunication