Millimeter wave generation system and method based on quantum dot laser

Abstract

The invention discloses a millimeter wave generation system and method based on quantum dot lasers. The generation system includes: a radio frequency signal generator for outputting radio frequency signals, a radio frequency power amplifier, and a 180-degree phase-shifting hybrid power splitter for generating InP monolithic integrated quantum dot laser for comb spectral signals, dual-arm Mach-Zehnder modulator, the input end is connected to InP monolithic integrated quantum dot laser for receiving comb spectral signals, the upper electrode and the lower electrode are respectively shifted by 180 degrees The first output terminal and the second output terminal of the phase hybrid power divider are connected to receive two radio frequency signals, and the output terminal is used to output the comb spectrum signal generated by modulation; after photoelectric conversion by the single row carrier photodetector, the output millimeter wave signal.

Description

technical field [0001] The invention relates to a millimeter wave generation method, in particular to a quantum dot laser-based millimeter wave generation system and generation method. Background technique [0002] With the advent of the era of fifth-generation mobile communication (5G for short), the data transmission rate that the wireless access network needs to support will increase by dozens of times compared with 4G, and the peak speed of data download can be as high as 20Gbps, broadband, wireless, and personalized And integration has become the general direction of the development of global communication networks. Although optical fiber communication has huge capacity, it lacks flexibility and mobility. Although wireless access technology based on low-frequency microwave can provide users with flexible mobile services, due to the shortage of spectrum resources, it cannot provide enough bandwidth to meet the growing mass of users. data transfer required. Therefore, t...

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Problems solved by technology

[0003] The traditional millimeter-wave generation method in the electrical domain mainly uses a frequency multiplier to multiply the low-frequency radio frequency signal multiple times to obtain a high-frequency millimeter-wave signal, which requires auxiliary phase-locked loops, filters and other electrical domain devices, and the system cost is expensive. , which is not conducive to large-scale implementation, and the generated millimeter wave signal has the disadvantages of large phase noise, limited frequency and poor stability

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