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Fiber

SFP

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The 40G SR4 module can be connected to 10G rate. The connection between 40G and 10G is achieved by setting the port rate of the switch.

SFP

SFP

Media Coverter

Fiber

SFP

Fiber

Unifi Switch

SFP

⁣What is Single-mode SFP?
Single-mode SFP (SMF SFP) operates on single-mode fibers that have a core diameter of 9 microns and a cladding diameter of 125 microns. SMF SFP primarily operates at wavelengths of 1310 nanometers and 1550 nanometers. Therefore, it is suitable for long-distance data transmission applications such as 2 kilometers, 10 kilometers, 40 kilometers, 60 kilometers, 80 kilometers, and 120 kilometers. There are various types of single-mode SFP modules available, such as 1000BASE-LX and 1000BASE-EX.


What is Multimode SFP?
Multimode SFP (MMF SFP) operates on multimode fibers that have core diameters of 50 microns or 62.5 microns and a cladding diameter of 125 microns. Common multimode SFP works at a wavelength of 850 nanometers and is used for short-distance transmission. Typically, they can reach up to 100 to 550 meters. There are various types of multimode SFP modules available, including SFP1G-SX-85.


Single-mode vs Multimode SFP: What’s the Difference?
There are several main differences between single-mode SFP and multimode SFP.
Working Wavelength
Single-mode SFP module has a narrower laser wavelength, which works essentially in 1310nm and 1550nm wavelength. However, the multimode SFP module works in 850nm wavelength because of the bigger core size.


Transmission Distance
Single-mode SFP modules are designed for long-distance transmissions, typically ranging from 2 to 120 kilometers, depending on the specific module type. They are ideal for large-scale networks requiring high-speed connectivity over vast distances. Multimode SFP modules are better suited for shorter distances, generally covering 100 to 550 meters, making them a cost-effective choice for data centers and local area networks where shorter transmission ranges are sufficient.
Color Coding
The color coding for single-mode SFP module typically includes blue, yellow, or purple. For FS products, blue is used for 1310 nanometer modules, yellow for 1550 nanometer modules, and purple for 1490 nanometer modules. The compatible fiber patch cords for single-mode SFP modules are usually yellow. On the other hand, the color-coding for multimode SFP modules includes black for the label's color-coding and arrow, and orange for the fiber patch cords used.

SFP

Fiber

SFP

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The small form factor pluggable (SFP) is a compact, hot-pluggable network interface module used for both telecommunication and data communications applications. The form factor and electrical interface are specified by a multi source agreement under the auspices of the Small Form Factor Committee.

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