High-speed transmitting and receiving module for 5G intermediate transmission

Abstract

The invention provides a high-speed receiving and transmitting module for 5G intermediate transmission. The receiving and transmitting module comprises a receiving optical path for receiving signals and a transmitting optical path for transmitting signals, wherein the receiving optical path and the transmitting optical path share a receiving and transmitting port of the receiving and transmittingmodule; a collimator is arranged in the receiving and transmitting port so as to collimate light entering the receiving and transmitting port into parallel light; the transmitting end of the receivingand transmitting module is provided with a laser chip used for transmitting signals, the receiving end of the receiving and transmitting module is provided with a photoelectric receiving chip used for receiving signals, and optical signals transmitted by the laser chip are firstly converted into parallel light through a lens part at the starting end of the transmitting optical path and then reachthe receiving and transmitting port through the transmitting optical path to be emitted; and the optical signals received by the receiving and transmitting port are collimated into parallel light andthen reach the photoelectric receiving chip through the receiving optical path. According to the invention, effective separation or synthesis of signals with narrow wavelength intervals can be realized by using a small-angle optical filter, effective wave combination and wave division of two paths of optical signals with narrow wavelength intervals are obtained through a short optical path, and high coupling efficiency is obtained at the same time.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a high-speed transceiver module for 5G mid-transmission. Background technique [0002] With the application of optical fiber network becoming more and more popular, especially the rapid implementation of the current 5G network, and point-to-point data transmission, especially the deployment of a large number of 5G mid-haul and front-haul nodes, the market for single-fiber bidirectional components with narrow wavelength intervals The demand is also growing. [0003] In the current 5G network, the fronthaul network is the transmission between the AAU (active antenna processing unit) and the DU (distribution unit), and the midhaul network is the transmission between the DU (distribution unit) and the CU (centralized unit). The medium-haul network handles a large amount of information, requires high speed, and uses 50G bidirectional; in addition, it is still a lo...

AI Technical Summary

Problems solved by technology

[0005] In the traditional dual-wavelength single-fiber bidirectional optical transceiver module component structure, the wavelengths of the transmitting and receiving ends need to be wide enough, otherwise the transmitted wavelength signal or reflected wavelength signal cannot be effectively separated

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