OPTICAL PULSE CALIBRATION FOR QKD

摘要

Methods and systems for generating calibrated optical pulses in a QKD System. The method includes calibrating a variable optical attenuator (VOA) (Figure 1 Number 40) by first passing radiation pulse of a given intensity and pulse Width through the VOA for a variety of VOA (Figure 1 Number 40) settings. Tie method further includes determining the VOA (Figure 1 Number 40) to Maximum attenuation and sending through the VOA optical pulses having varying pulse widths. The method also includes determining the power needed at the receiver in the QKD system, and setting the VOA so that optical radiation source are calibrated to provide the needed average power.