What is the way of SFP classification?

Divided by rate: 155M/622M/1.25G/2.125G/4.25G/8G/10G,155M and 1.25G market is used more, 10G technology is maturing, demand is to increase quickly.

Divided according to the wavelength: 850 nm/1310 nm/1550 nm/1490 nm/1530 nm/1610 nm.

    The 850 nm wavelength is SFP multimode, and the transmission distance is 2 km below .

    1310/1550 nm is SFP single-mode, and the transmission distance is longer than 2 km.

    850 nm/1310 nm/1550 nm price relatively cheaper than the other three.

The bare module is easy to confuse if they have no mark,the manufacturers will make the color of pull ring to distinguish generally, For example:

    Black pull ring is multi-mode, the wavelength is 850 nm;

    Blue is the 1310 nm module;

    Yellow is the 1550 nm module ;

    Purple is the 1490 nm module and so on.

SFP, with its small and low-cost advantages to meet the equipment needs of high-density optical modules has become mainstream.

April 27, 2012

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