The invention relates to a hydrophobic dual-sealing photoelectric electric-field sensor applicable to high-
humidity environment and belongs to the technical field of electric-field measurement. The hydrophobic dual-sealing photoelectric electric-field sensor is of a
symmetric structure and is characterized in that optical-
fiber sheath bonding
layers are respectively arranged between a
pipe shell cover and a
pipe shell body, between sleeves and the
pipe shell body as well as between optical-
fiber sheaths and the sleeves. A
chip is arranged in the pipe shell body, the optical
waveguide is relatively fixed with the
chip, one end of each of the optical fibers is respectively connected with two side end parts of the optical
waveguide, and the other ends of the two optical fibers extend out of optical-
fiber sheaths at the two sides of the pipe shell body respectively. A hydrophobic
coating is coated on the surfaces of the pipe shell body and the sleeve. The hydrophobic dual-sealing photoelectric electric-field sensor has the advantages that the pipe shell is treated by adopting double sealing and hydrophobicity, so that normal measurement can also be carried out under the environment with the
relative humidity being smaller than 90%, no
distortion is caused to the waveform of a measured
electric field, and further the accuracy of a measurement result is greatly improved. The hydrophobic dual-sealing photoelectric electric-field sensor is especially applicable to regions with the full-year average
relative humidity being greater than 60% in China.