Fiber jumpers is essential fiber optic cabling connecting lines, fiber optic jumper in the purchase, we always see the words PC / APC / UPC, such as LC / UPC fiber jumpers, FC / UPC fiber jumpers, SC / APC fiber jumpers, ST / PC optical fiber jumpers, etc., then you know which PC / APC / UPC stands for anything? SFP optical module is the PC / APC / UPC Fiber jumpers with? By This paper describes, I believe you will find the answer.
PC / APC / UPC refers to fiber jumpers different polishing an optical fiber connector, and the different grinding decided fiber transmission quality, mainly return loss and insertion loss.
PC, that is physical contact . Is the most common optical fiber jumper connector grinding method, grinding method using PC return loss of an optical fiber jumper -40dB.
UPC, i.e. super physical contact . From the PC of evolution, better surface finish, return loss is generally at -50dB.
APC, i.e., physical contact angle . A ground end face 8 degree angle, which can effectively reduce the reflection, the return loss is about -60dB. APC can only be connected to the APC. Since the APC is completely different structure and UPC, if these two connectors connecting flange, it will damage the fiber end face of the connector.
How SFP optical module should select PC / APC / UPC Fiber jumpers correct?
Known, SFP optical module port has two transmission channels, wherein a port for transmitting signals, and one port for receiving a signal, the transmission signal is normally achieved by an optical fiber jumper required. The above mentioned PC / APC / UPC three different types of abrasive fiber jumpers, three fiber jumpers can be used with the SFP optical module do?
SFP optical module connection port is flat, since the PC and the structure of the fiber end faces are flat UPC (with a slightly curved) structure, it can, UPC patchcord connected PC ; PC and APC while the UPC structure is completely different from the fiber end face, so SFP optical module is not connected to the APC fiber jumpers . If the connecting force, it will cause damage to the connectors, caused an invalid connection or network failure.
In short, PC may be used with the UPC optical fiber jumper switches and other devices on the Ethernet, the SFP optical module with the use; mainly used for the APC of FTTx fiber jumper, a passive optical network (PON) and a Wavelength Division Multiplexing (WDM) on it is best not used with the SFP optical module. Specific selection to be based on your network needs, and easy days to provide fiber optic jumpers and SFP optical module PC / APC / UPC grinding three different ways for you, find out more easily visible sky communications official website consultation.