Drive control system and realization method of three-chip polarization state encoder

Abstract

The invention relates to a driving control system of a three-wafer type polarization encoder, and a realization method thereof. The system comprises a high-voltage driving circuit and a control circuit connected with each other. The high-voltage driving circuit comprises a direct-current voltage stabilization unit, a DAC unit and a high-voltage amplification unit. The control circuit comprises an ARM main control unit and a DPS operation unit. The control circuit is used for controlling the output voltage of the high-voltage driving circuit according to a search path from input polarization to target polarization. The high-voltage driving circuit is connected with the three-wafer type polarization encoder communicated with free space coherent light and is used for providing a driving bias voltage to the three-wafer type polarization encoder, so that the polarization encoding of free space single-beam coherent light communication is realized.

Description

technical field

[0001] The invention relates to the fields of signal generating circuit, coherent optical communication and quantum secure communication, in particular to a drive control system of a three-chip polarization state encoder and an implementation method thereof. Background technique

[0002] Polarization coding, as an optical signal coding method, is widely used in classical coherent optical communication and quantum secure communication. Polarization encoding should be done with a polarization controller. The common polarization controllers mainly include: rotatable crystal wave plate type polarization controller, magneto-optical modulator, liquid crystal type polarization controller, and electro-optic modulator.

[0003] The magneto-optic modulator uses the Faraday optical rotation effect, and its driver needs to provide up to several amperes of current. Due to the magnetic hysteresis effect of the electromagnet, the driver speed is relatively slow, resulting i...

Examples

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] This implementation provides a drive control system for a three-chip polarization encoder, such as figure 1 As shown, it includes a high-voltage drive circuit and a control circuit connected to each other; the high-voltage drive circuit includes a DC voltage stabilization unit, a high-precision voltage stabilization unit, a DAC unit, and a high-voltage amplification unit; the control circuit includes a ARM main control unit and a DSP operation unit; the control circuit is used to control the output voltage of the high-voltage drive circuit according to the search path from the input polarization state to the target polarization state; the high-voltage drive circuit and a free space coherent light The three-chip polarization encoder for communication is connected to provide driving bias for the three-chip polarization encoder, so as to realize pol...

technical field

[0001] The invention relates to the fields of signal generating circuit, coherent optical communication and quantum secure communication, in particular to a drive control system of a three-chip polarization state encoder and an implementation method thereof. Background technique

[0002] Polarization coding, as an optical signal coding method, is widely used in classical coherent optical communication and quantum secure communication. Polarization encoding should be done with a polarization controller. The common polarization controllers mainly include: rotatable crystal wave plate type polarization controller, magneto-optical modulator, liquid crystal type polarization controller, and electro-optic modulator.

[0003] The magneto-optic modulator uses the Faraday optical rotation effect, and its driver needs to provide up to several amperes of current. Due to the magnetic hysteresis effect of the electromagnet, the driver speed is relatively slow, resulting i...

Examples

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] This implementation provides a drive control system for a three-chip polarization encoder, such as figure 1 As shown, it includes a high-voltage drive circuit and a control circuit connected to each other; the high-voltage drive circuit includes a DC voltage stabilization unit, a high-precision voltage stabilization unit, a DAC unit, and a high-voltage amplification unit; the control circuit includes a ARM main control unit and a DSP operation unit; the control circuit is used to control the output voltage of the high-voltage drive circuit according to the search path from the input polarization state to the target polarization state; the high-voltage drive circuit and a free space coherent light The three-chip polarization encoder for communication is connected to provide driving bias for the three-chip polarization encoder, so as to realize pol...

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