Wavelength division multiplexing system, local side device and far-end device

Abstract

The embodiment of the invention provides a wavelength division multiplexing system, a local side device and a far-end device, the wavelength division multiplexing system comprises a plurality of optical modules and a pair of wave combiners and separators, wherein the plurality of optical modules are respectively connected with the wave combiners and separators; the pair of wave combiners and separators are connected through an optical fiber link; the distances between the central wavelengths of all channels of the wave combiners and separators are equal; the distances between the central wavelengths of the transmitted light of the optical modules in the adjacent wavelength channels are different; the distances between the central wavelengths of the transmitted light of the optical modulesin the odd wavelength channels are equal; and the distances between the central wavelengths of the transmitted light of the optical modules in the even wavelength channels are equal. In the embodimentof the invention, the optical module with the non-equidistant wavelength channels and the wave combiners and separators with the equidistant wavelength channels are adopted, so that the system requirement of a 5G forward transmission network is met.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular to a wavelength division multiplexing system, a central office device, and a remote device. Background technique [0002] With the increasingly prominent problems of computer room construction and rising maintenance costs, the fronthaul network of the fifth generation communication technology (5th generation, 5G) will undergo major structural changes, and the cloud radio access network (Cloud-Radio AccessNetwork, C-RAN) is expected to become the future 5G network. The mainstream networking method of the fronthaul network. At present, C-RAN is mainly centralized, and a single distribution unit (Distribute Unit, DU) centralized computer room connects 5-10 physical stations. Considering that 1 physical station corresponds to 3 active antenna units (Active Antenna Unit, AAU), Under the 160M frequency spectrum, each AAU has two 25G optical modules, a...

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a wavelength division multiplexing system, a central office device and a remote device to solve the problem that the existing WDM technology cannot meet the system requirements of the 5G fronthaul network

Images