摘要：【中文】本公开提供一种基于变频技术的频率测量设备，包括：激光源；信号接收模块；微波源；变频模块，进行变频生成变频后电信号并输出；电光调制模块，与所述信号接收模块、激光源、以及变频模块相连，输出第一调制后光信号和第二调制后光信号；微分模块，与所述电光调制模块相连，用于将第一调制后光信号和第二调制后光信号进行微分处理，输出第一耦合微分信号和第二耦合微分信号；偏振分束模块，分别对第一耦合微分信号和第二耦合微分信号进行偏振解复用输出待粗测量信号与待精测量信号；以及测量模块，将待粗测量信号输入第一平衡探测器，得到粗测量结果；将待精测量信号输入第二平衡探测器，并依粗测量结果调节微波源信号，得到精测量结果。 【EN】The present disclosure provides a frequency measurement device based on a frequency conversion technique, including: a laser source; a signal receiving module; a microwave source; the frequency conversion module is used for carrying out frequency conversion to generate and output a frequency-converted electric signal; the electro-optical modulation module is connected with the signal receiving module, the laser source and the frequency conversion module and outputs a first modulated optical signal and a second modulated optical signal; the differential module is connected with the electro-optical modulation module and used for carrying out differential processing on the first modulated optical signal and the second modulated optical signal and outputting a first coupling differential signal and a second coupling differential signal; the polarization beam splitting module is used for respectively carrying out polarization demultiplexing on the first coupling differential signal and the second coupling differential signal and outputting a signal to be roughly measured and a signal to be accurately measured; the measuring module is used for inputting the signal to be roughly measured into the first balanced detector to obtain a roughly measured result; and inputting the signal to be measured accurately into a second balanced detector, and adjusting the microwave source signal according to the coarse measurement result to obtain an accurate measurement result.

摘要：【中文】本公开提供一种基于双平行马赫曾德尔调制器的多频信号测量设备，包括：激光器，用于提供光信号；待测信号接收端，接收待测信号并放大；参考微波信号源，用于提供参考微波信号；直流源，用于提供直流偏置电压，包括相互独立的第一直流源、第二直流源、以及第三直流源；双平行马赫曾德尔调制器，分别与激光器、待测信号接收端、直流源、以及参考微波信号源相连，用于实现对光信号进行调制生成调制光信号；双平行马赫曾德尔调制器包括主调制器、第一子调制器、以及第二子调制器；光功率放大器，与所述双平行马赫曾德尔调制器相连，用于对调制光信号功率进行放大；以及光电探测器，与所述光功率放大器相连，用于实现光电转换，输出可测功率电信号。 【EN】The present disclosure provides a multi-frequency signal measurement device based on a dual parallel mach-zehnder modulator, including: a laser for providing an optical signal; the signal receiving end to be detected receives and amplifies the signal to be detected; the reference microwave signal source is used for providing a reference microwave signal; the direct current source is used for providing direct current bias voltage and comprises a first direct current source, a second direct current source and a third direct current source which are mutually independent; the double-parallel Mach-Zehnder modulator is respectively connected with the laser, the receiving end of the signal to be measured, the direct current source and the reference microwave signal source and is used for modulating the optical signal to generate a modulated optical signal; the dual parallel Mach-Zehnder modulator comprises a main modulator, a first sub-modulator and a second sub-modulator; the optical power amplifier is connected with the double parallel Mach-Zehnder modulator and is used for amplifying the power of the modulated optical signal; and the photoelectric detector is connected with the optical power amplifier and used for realizing photoelectric conversion and outputting an electric signal with measurable power.