The Gigabit Ethernet SFP optical single port extended reach transceiver. The device has built in 1270nm transmitter/ 1330nm receiver WDM filter allowing transport of GbE over a single fiber without external devices. These SFPs are well suited for short/mid haul applications. The Gigabit Ethernet SFP’s are small form factor pluggable transceivers that consist of an optical transmitter and an optical receiver. The transmitter and receiver technology in use is different between the different SFP products. All SFP’s have the ability to report information such as wavelength, received signal level, launch power and internal temperature. This information is available in some of Nevion’s SFP based products presented through their respective element management system.