Diversity of Optical Modules
SFP (Small Form-Factor Pluggable) optical modules and their enhanced version, SFP+, are crucial components in today's computer networks. Here is some information about these modules:
SFP (Small Form-Factor Pluggable):
Types:
SX (Short-Range): Used for short distances, typically within a few hundred meters. Utilizes multimode fiber. LX (Long-Range): Designed for longer distances, capable of supporting even several kilometers. Utilizes single-mode fiber.
Applications:
SFP SX is often used in LANs within buildings. SFP LX is commonly used in extensive WANs and for connections between buildings.
Throughput:
Typically offers a throughput of 1 Gb/s (Gigabit Ethernet).
Wavelengths:
SX: Around 850 nm. LX: Usually 1310 nm. SFP+ (Enhanced Small Form-Factor Pluggable):
Types:
SR (Short-Range): Optimal for short distances, similar to SFP SX but with higher throughput. LR (Long-Range): Designed for longer distances, similar to SFP LX but also with higher throughput. ER (Extended Range): Used in networks with a greater range than LR. ZR (Ultra-Long Range): Used in networks with very long ranges, such as metro networks.
Applications:
SFP+ is widely used in 10 GbE (Gigabit Ethernet) and 40 GbE networks.
Throughput:
Offers throughput up to 10 Gb/s, and versions supporting 40 Gb/s.
Wavelengths:
SR: Around 850 nm. LR: Usually 1310 nm. ER and ZR: Dependent on the specific model but can achieve distances of tens of kilometers.
SFP and SFP+ modules are crucial elements in flexible networks, enabling easy replacement and configuration based on the specific needs of the infrastructure. Depending on the application, choosing the appropriate type of optical module is essential for the effective and reliable operation of the network.
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