SFP transceiver

SFP transceivers come in various types of sending and receiving, and users can choose the appropriate transceiver for each link to provide the "optical performance" that can be achieved based on available fiber types, such as multimode or single-mode fiber. The available optical SFP modules are generally classified into the following categories: MMF (SX) at 850 nm wavelength/550 meter distance, SMF (LX) at 1310 nm wavelength/10 kilometer distance, XD at 1550 nm wavelength/40 kilometer distance, ZX at 80 kilometer distance, EX or EZX at 120 kilometer distance, and DWDM. SFP transceivers also provide copper cable interfaces, allowing host devices primarily designed for fiber optic communication to communicate through UTP network cables. There are also wavelength division multiplexing (CWDM) and single fiber "bidirectional" (1310/1490 nanometer wavelength up/down) SFPs.

Commercial SFP transceivers can provide speeds up to 4.25 GB

Most optical SFP transceivers support SFF-8472 (Industry Standard Multilateral Protocol). According to the SFF-8472 protocol, it is necessary to support Digital Diagnostic Monitor (DDM) function, which enables end users to detect SFP parameters in real-time, such as the basic five major monitoring quantities: temperature (Temperature), transceiver supply voltage (Vcc), laser bias current (Tx Bias Current), optical output power (Tx Power) Input power (Rx Power).