Speaking of SFP optical modules, we are all familiar with it. SFP stands for SMALL FORM PLUGGABLE (Small Pluggable). It is one of the most commonly used packages for Gigabit Ethernet optical modules and an industry standard for Gigabit Ethernet. So, what are the common SFP optical modules? Now follow JHA TECH to understand it.

SFP optical module is a compact input/output (I/O) device, mainly used in Gigabit Ethernet switches, routers and other network equipment, comply with various communication standards such as Fibre Channel (Fiber Channel), Gigabit Ethernet, SONET (Synchronous Optical Network), etc. Can easily realize 1G optical fiber connection or copper cable connection between network devices on the basis of the existing network structure.

A collection of common SFP optical modules
According to the different types of transmitter and receiver, SFP optical modules can be divided into multiple types, and their working wavelength, transmission distance, suitable applications, etc. are all different. This section will introduce various SFP optical modules.

1000BASE-T SFP optical module: This SFP optical module adopts the RJ45 interface, and is usually used in copper network wiring applications with Category 5 network cables. The maximum transmission distance is 100m.

1000Base-SX SFP optical module: 1000Base-SX SFP optical module adopts duplex LC interface, conforms to IEEE 802.3z 1000BASE-SX standard, usually used in multi-mode applications, and the transmission distance when using traditional 50um multi-mode fiber is 550m, and The transmission distance when using 62.5um multimode fiber is 220m, and the transmission distance when using laser optimized 50um multimode fiber can reach 1km.

1000BASE-LX/LH SFP optical module: 1000BASE-LX/LH SFP optical module conforms to the IEEE 802.3z 1000BASE-LX standard. It can be used in single-mode applications or multi-mode applications. It is compatible with single-mode fiber The transmission distance can reach 10km, and the distance when used with multimode fiber is 550m. It should be noted that when 1000BASE-LX/LH SFP optical module is used together with traditional multi-mode fiber, the transmitter must use a mode conversion jumper.

1000BASE-EX SFP optical module: 1000BASE-EX SFP optical module is generally used in long-distance single-mode transmission applications, and the transmission distance can reach 40km when used with standard single-mode fiber.

1000BASE-ZX SFP optical module: 1000BASE-ZX SFP optical module is also used in long-distance single-mode transmission applications, and the transmission distance can reach 70 km. If you want to use 1000BASE-ZX SFP optical modules in applications where the transmission distance is far less than 70 km, you must insert an optical attenuator in the link to prevent excessive optical power from damaging the receiving end of the optical module.

1000BASE BIDI SFP optical module: 1000BASE BIDI SFP optical module uses a simplex LC optical port, which is generally used in single-mode transmission applications. This kind of optical module needs to be used in pairs. For example, a 1490nm/1310nm BIDI SFP optical module must be used in a pair with a 1310nm/1490nm BIDI SFP optical module.

DWDM SFP optical module: DWDM SFP optical module is an indispensable component in DWDM network. It uses DWDM wavelength and has 40 common wavelength channels to choose from. It is a high-performance serial optical data transmission module.

CWDM SFP optical module: CWDM SFP optical module is an optical module that uses CWDM technology. Its working wavelength is CWDM wavelength and there are 18 wavelength channels to choose from. Like the conventional SFP optical module, the CWDM SFP optical module is also a hot-pluggable input/output (I/O) device used in the SFP interface of a switch or router.

The price and use of different SFP optical modules are different, and the same SFP optical modules produced by different manufacturers will have huge differences in performance and price. Consumers should consider price, use, compatibility, and compatibility when purchasing SFP optical modules. Comprehensive consideration of many aspects such as brand.