Photon linear frequency conversion and optical fiber transmission method for microwave and millimeter wave signals

Abstract

The invention discloses a photon linear frequency conversion and optical fiber transmission method for microwave and millimeter wave signals, and relates to the technical field of microwaves and the technical field of optical communication. The method is shown in a figure 1 in the specification, and comprises a laser, a dual-polarization quadrature phase shift keying modulator, an electric power divider, an electric attenuator, a polarization controller, a polarizer, a single-mode fiber, an erbium-doped fiber optical amplifier and a photoelectric detector. A radio frequency signal and a local oscillator signal are modulated to an optical carrier in a minimum point modulation mode, so that the frequency conversion efficiency is improved; the main bias voltage of the modulator is used for compensating power fading caused by optical fiber dispersion; and the polarization controller is used for realizing linear optimization. Dispersion compensation and linear optimization are simultaneously realized in the photon frequency conversion system, the system gain and the dynamic range are improved to a greater extent, and the method has important application value in the fields of multi-base-station radars, wireless communication and the like.

Description

technical field [0001] The invention relates to the technical field of optical communication and microwave and millimeter wave technology, and mainly relates to photon frequency mixing of microwave and millimeter wave signals and linear optimization and dispersion compensation in links. Background technique [0002] In recent years, military electronic and civilian communication systems such as electronic warfare, radar, and satellite communications are developing towards multi-band and large bandwidth. Multi-stage frequency mixing structure, each stage needs signal processing units such as frequency conversion, filtering, amplification, etc., making the entire frequency mixing module very large and complex. At the same time, the proposal of the distributed structure in the radar system and the development of the micro-cell structure in the mobile communication system have multiplied the number of base stations. How to realize the efficient and low-cost transmission of signa...

AI Technical Summary

Problems solved by technology

However, there are currently few schemes that can simultaneously optimize nonlinear distortion and compensate link dispersion in the photonic mixing structure, and the existing simultaneous optimization schemes, dispersion compensation and linear optimization, restrict each other, making the performance of the system limited.

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