Optical electric field sensor and sensing signal demodulation system

The invention relates to an optical electric field sensor and a sensing signal demodulation system, and belongs to the technical field of photoelectricity. The first single-polarization optical fiber is used for converting an input light source into linearly polarized light; the birefringence optical fiber is used for converting the linearly polarized light into circularly polarized light; the first self-focusing optical fiber is used for converting the circularly polarized light into parallel emergent light; the first electro-optical crystal is used for decomposing the parallel emergent light into two beams of orthogonal linear polarized light; the half-wave plate is used for rotating the two beams of orthogonal linear polarized light by 90 degrees; the second electro-optical crystal is used for transmitting the rotated two beams of orthogonal linear polarized light; the second self-focusing optical fiber is used for converting the output of the second electro-optical crystal into parallel emergent light; an