Optical fiber polymer microcavity pressure sensor and preparation method thereof

• Main Authors: FAN ENBO, MA JUN, GUAN BAI'OU
• Format: Patent
• Language: Chinese; English
• Published: 27.08.2021
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TESTING; TRANSPORTING

The invention discloses an optical fiber polymer microcavity pressure sensor and a preparation method. The end face of one end of an optical fiber in the optical fiber polymer microcavity pressure sensor is provided with a recess, a micro air cavity is arranged between the recess and air, heating laser is injected into the end face of the optical fiber provided with the recess from the other end of the optical fiber, and ultraviolet glue is dripped on the end face of the recess. According to the preparation method of the optical fiber polymer microcavity pressure sensor, geometric parameters of the ultraviolet glue on the end face of the optical fiber are changed by heating laser, the thickness of the ultraviolet glue and the length of the micro air cavity can be flexibly controlled, the pressure sensitive characteristic of the sensor is regulated and controlled, the performance and applicability of the sensor are improved, and the requirements of different application occasions on pressure, sound wave and ul