The summarize of SFP optical module

The composition of SFP optical module are: laser, including TOSA transmitter and receiver IC ROSA PCB, external fittings are: shell, base, PCBA, TAB, card buckle, unlock pieces, rubber plug, the other in order to identify the convenient, general with the color of the TAB to identify the parameters of the module type.

For example : a black ring pull multimode wavelength is 850nm; blue wavelength 1310nm module ; yellow is the wavelength of 1550nm module ; Purple is the wavelength of 1490nm module . the classification of SFP optical module :

1 , according to the rate divided 155M/622M/1.25G/2.125G/4.25G/8G/10G, 155M and 1.25G currently on the market use more , 10G technology is maturing , demand positive attitude to rise development is the next major optical module products.

2, according to the wavelength divided 850nm/1310nm/1550nm/1490nm/1530nm/1610nm, as SFP 850nm wavelength multimode transmission distance 2KM less common like Cisco GLC-SX-MM; 1310/1550nm wavelength for Single-mode , the transmission distance 2KM above , relatively speaking, these three wavelengths cheaper price than the other three .

If you do not identify the bare module is easy to confuse the general distinction between manufacturers will pull rings in color , such as: black pull ring for multimode wavelength is 850nm; blue wavelength 1310nm module ; yellow is the wavelength of 1550nm module ; purple is the wavelength of 1490nm module .

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