X2 Optical Module Introduction

X2 is a standardized package of the 10G optical transponders .  X2 are available for  both versions  10G Ethernet and 10G Fibre Channel. X2 optical transponder is only applied to the data communication optical fiber connection (not used in the telecommunications transmission network), and their size is smaller than XENPAK optical transponder.Electrical interface of board is standardized, be knowed as XAUI (4X3.125Gb / s).

X2 optical modules is evolved from the standard of Xenpak, and its internal functional modules are same to Xenpak basically,  the circuit board applications are same too .that only need one optical module to achieve  10G Ethernet interface functions. As Xenpak optical modules put-on the board need to slot on the circuit board , so it will be  achieve  complex and can not achieve high density applications. improved  X2 optical modules ' size  only about half of  Xenpak, can be directly put on the board, so apply to high-density rack systems and PCI card applications.

X2 optical modules are available in two circuit interface: XAUI and Serial Framer Interface (SFI-4), which can be used for 10G Ethernet and  also can be used for OC-192 SDH and 10GFC. X2 compared to Xpak changes are mainly reflected in the rail system, the industry generally believe that the  two specifications will be integrated together finally.

keywords :Cisco X2-10GB-ER,   HP J8436A X2 Transceiver Module