Polarization control system and method based on straight waveguide modulator and quantum key distribution system
A polarization control, straight waveguide technology, applied in key distribution, can solve problems such as process difficulties, reduced polarization state encoding accuracy, instability, etc., to simplify the system structure, avoid the problem of arm length control, and achieve high polarization control system rates. Effect
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[0031] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of illustration in order to fully convey the spirit of the present invention to those skilled in the art to which the present invention pertains. Therefore, the present invention is not limited to the embodiments disclosed herein.
[0032] Combine below figure 1 The working principle of the polarization control system and method based on the direct waveguide modulator of the present invention is described.
[0033] Such as figure 1 As shown, the polarization control system may include a first phase pre-modulation unit 11 and a second phase pre-modulation unit 12 connected in series, and a phase modulation signal source 14 . In this context, "serial connection" means that the output of the previous unit will become the input of the next unit.
[0034] The first phase pre-modulation unit 11 a...
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