16-frequency multiplication millimeter wave signal generation device and method based on parallel Mach-Zehnder modulator

Abstract

The invention provides a 16-frequency multiplication millimeter wave signal generation device and method based on a parallel Mach-Zehnder modulator. The device comprises a continuous laser CW, a parallel Mach-Zehnder modulator, an optical carrier suppressor and a photoelectric detector PD, wherein the parallel Mach-Zehnder modulator is formed by connecting MZM-1 and MZM-2 in parallel, and the optical carrier suppressor is formed by cascading an optical attenuator OATT and an optical phase shifter PS; the optical signal output by the CW is divided into two paths through an optical beam splitter, one path is output to a port of the parallel Mach-Zehnder modulator, and the other path is output to a port of the optical carrier suppressor; the radio frequency driving signal RF is loaded to the MZM-1 and the MZM-2, an electric phase shifter is adjusted, the phase difference of the radio frequency driving signals input to the upper and lower arms of the MZM-1 and the MZM-2 is set to be pi, the direct current bias voltage is set to be 0, and the MZM-2 works at the maximum transmission point; the phase of PS is set to be pi, and the attenuation value of OATT is adjusted, so that optical carriers output by the Mach-Zehnder modulator in parallel are suppressed, only 8-order sideband signals exist in finally output optical signals, and 16-frequency-multiplication millimeter wave signals are generated through PD beat frequency.

Description

technical field [0001] The present invention relates to the field of microwave photon technology, mainly to the field of generating millimeter wave signals using microwave photon technology, and in particular to a 16-fold frequency millimeter wave signal generation device and method based on a parallel Mach-Zehnder modulator. Background technique [0002] In practical applications such as satellites, radars, electronic warfare, and next-generation wireless communications, the frequency requirements for microwave signals are getting higher and higher. In order to improve the signal transmission rate and bandwidth, the working frequency of electronic systems needs to be developed towards the millimeter wave band. Due to the limited frequency response bandwidth of electronic devices and nonlinear factors, the signal phase noise will deteriorate and the phase drift will be serious. Therefore, there are certain limitations in generating millimeter wave signals above 100 GHz. The ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the complex structural problems existing in the existing 16-fold frequency millimeter-wave system, the present invention provides a 16-fold frequency millimeter-wave signal generation device and method based on a parallel Mach-Zehnder modulator, without introducing any optical or electrical filter Under certain conditions, it can generate 16 times frequency millimeter wave signal, which has the advantages of high frequency multiplication times and low system complexity.

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