Compensation interferometer structure for optical fiber hydrophone

• Main Authors: GU MINXUE, LI DUANMING, GUI HONGMENG, QU RUIXUAN, HU JIANGFEI
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

The invention provides a compensation interferometer structure for an optical fiber hydrophone in the technical field of coherent light communication, and the structure comprises a device part and a packaging part, the packaging part comprises a vacuum acoustic shield, the device part is arranged in the vacuum acoustic shield, the vacuum acoustic shield seals the device part, and air is pumped out of the vacuum acoustic shield. The device part comprises a piezoelectric ceramic ring and an interferometer, the interferometer comprises an optical fiber, and the optical fiber is wound on the piezoelectric ceramic ring. According to the invention, the demodulation carrier and the sound reference number are loaded by using the optical fiber winding piezoelectric ceramic ring, so that the convenience of testing the optical fiber hydrophone system in the use process is greatly improved. The device part of the compensation interferometer equipment is sealed by arranging the vacuum sound insulation cover, the sound ins