What are the common types of optical modules

　　What are the common types of optical modules

　　Sort by speed

　　In order to meet the requirements of various transmission rates, optical modules with different rates are produced: 400GE optical modules, 100GE optical modules, 40GE optical modules, 25GE optical modules, 10GE optical modules, GE optical modules, FE optical modules, etc.

　　Sort by package type

　　The higher the transmission rate, the more complex the structure, resulting in different packaging methods. The package types applicable to Huawei switches are: QSFP-DD, QSFP28, QSFP+, SFP28, SFP/eSFP, SFP+, CXP, CFP, etc.

　　Sort by pattern

　　Fiber is divided into single-mode fiber and multi-mode fiber. In order to use different types of optical fibers, single-mode optical modules and multi-mode optical modules are produced.

　　The center wavelengths of single-mode optical modules are generally 1310nm and 1550nm, which are used together with single-mode optical fibers. Single-mode fiber has a wide transmission frequency and large transmission capacity, which is suitable for long-distance transmission.

　　The center wavelength of the multimode optical module is generally 850nm, which is used together with the multimode optical fiber. Multimode fiber has modal dispersion defect, and its transmission performance is worse than that of single-mode fiber, but the cost is low, and it is suitable for small capacity and short distance transmission.