A single mode SFP transceiver is a hot-swappable optical module designed to transmit and receive data over single mode fiber (SMF). It is commonly used in Ethernet and fiber optic networking equipment such as switches, routers, and media converters. Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining. Smartoptics SFP modules are for running various optical data communications such as 1/2G FC, Fast Ethernet and Gigabit Ethernet. Whether for use in data centres, telecommunications networks, such as FTTH installations or corporate networks, our modules offer. These issues are often due to a mismatch or misconfiguration of fiber optic 1G SFP modules.