Optical Module Knowledge | How to read the naming of optical modules?

How to read the naming of optical modules

Understanding the naming rules of optical modules will enable you to read all the information contained in a vendor's optical module product name. This article is a breakdown of the common naming rules.

Table 1-4 Naming rules for optical modules

Marking	Meaning
A	Indicates the package type of the optical module, mainly SFP/eSFP SFP+ SFP28 QSFP+ CXP CFP QSFP28 QSFP-DD
B	Indicates the rate of the optical module, mainly FE GE 10GE 25GE 40GE 100GE 400GE
C	Indicates the type of transmission distance of the optical module, where SX：短距 LX：中距 LH：长距
D	Indicates the transmission distance of the optical module in km。
E	Indicates the device category of the optical module, where SM：单模 MM：多模
F	Indicates the central wavelength of the optical module, in nm