Bidirectional wire and wireless hybrid optical access method and system based on optical phase modulator

Abstract

The invention discloses a bidirectional wire and wireless hybrid optical access method and system based on an optical phase modulator. In a junction center, downlink optical signals including optical carriers, and + / - 2 level and +3 level optical sidebands are generated through the optical phase modulator and an optical band pass filter; the downlink optical signals are transmitted to a hybrid ONU through a downlink transmission link, and the optical carriers are firstly reflected to bear uplink signals by utilizing a fiber bragg grating (FBG) and an optical circulator (OC) on the hybrid ONU; optical signals transmitted by the FBG are injected into a photoelectric detector, thereby generating downlink wire and wireless access signals; the optical carriers extracted by the FBG and the OC modulate wire or wireless access uplink signals through an optical intensity modulator (IM), the wire or wireless access uplink signals are transmitted to the junction center through an uplink optical fiber link, the wire or wireless access signals are recovered on the junction center, and full duplex transmission of the wire or wireless access signals between the junction center and the hybrid ONU is completed.

Description

technical field [0001] The present invention relates to the field of optical fiber communication and millimeter wave communication, in particular to the use of optical fiber to transmit optical carrier millimeter wave signals including uplink optical carrier, carrying optical sidebands of wired and wireless access services, based on electro-optical conversion with an optical phase modulator, And direct detection based on photodetector PD realizes full-duplex wired and millimeter-wave wireless selective access. Background technique [0002] With the advent of the information age of human society, the continuous emergence of new ultra-broadband multimedia services such as conference TV, video on demand, online games, 3-D and HD / UHD TV, as well as the rapid development of e-commerce and online shopping services today, make The demand for communication capacity of wired and wireless access networks has increased rapidly; at the same time, people hope to be connected to the netwo...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low utilization rate of equipment and spectrum, channel redundancy and inflexible access mode of the above-mentioned high-speed wired or wireless hybrid access network, and realize the deep integration of wired access network and wireless access network, the present invention provides A bidirectional wired and wireless hybrid optical access method and system based on an optical phase modulator

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