Stable decoy state pulse intensity modulation method and intensity modulator

• Main Authors: CHEN WEI, HE DEYONG, YIN ZHENQIANG, HAN ZHENGFU, ZHOU ZHENG, LU FENGYU, WANG SHUANG, FAN-YUAN GUANJIE, WANG FANGXIANG, GUO GUANGCAN
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The embodiment of the invention discloses a stable decoy state pulse intensity modulation method and an intensity modulator, and the method comprises the steps: under the condition that the intensity of the decoy state pulse output by the intensity modulator is a stable point, determining the number of channels of an intensity modulator, the beam splitting ratio of a beam splitter in each channel, the attenuation rate of an adjustable attenuator and the target input pulse intensity of the input intensity modulator; through the maximum decoy state pulse intensity,determining target direct current voltage intensity needing to be loaded by each first terminal; and under the condition that the first terminal loads the target direct-current voltage intensity and the input pulse intensity is the target input pulse intensity, determining radio-frequency signal amplitudes needing to be loaded by the second terminals corresponding to decoy state pulses with different intensities through a preset first formula; therefo