Patent ID: 9178623
Filing Date: 2015-11-03
Classification: H04B,H04L

Abstract:
1. A photon phase modulating system, comprising: a random number generating unit, configured to generate a random digital number; a parallel/serial converting unit, configured to perform parallel/serial conversion on the random digital number generated by the random number generating unit to obtain a serial random digital signal; a high-speed serial transceiver, configured to receive the serial random digital signals generated by the parallel/serial converting unit and outputting two separate digital driving signals; a gain control network, configured to perform gain control on the two separate digital driving signals respectively, and to generate two driving signals for driving an electro-optic phase modulator; and the electro-optic phase modulator having two separate modulation electrodes, each of which receives a corresponding one of the two driving signals, the electro-optic phase being configured to perform phase modulation on an inputted photon and implement four-phase modulation on the inputted photon based on a combination of the two separate digital driving signals.