Packaging structure and method of high-temperature-resistant optical fiber pressure sensor

The invention discloses a packaging structure and method for a high-temperature-resistant optical fiber pressure sensor, and the structure comprises a high-temperature alloy housing, a pressure sensing unit, a ceramic tube, an optical fiber, a high-temperature-resistant elastomer, a compression ring, and a sealing structure. Wherein the pressure sensitive unit, the ceramic tube, the high-temperature-resistant elastomer and the compression ring are all arranged in the high-temperature alloy shell; the pressure ring is pressed against the pressure sensitive unit, the pressure sensitive unit is pressed against the ceramic tube, one end of the high-temperature-resistant elastomer is pressed against the ceramic tube, and the other end of the high-temperature-resistant elastomer is pressed against the inner wall of the high-temperature alloy shell; one end of the optical fiber is fixed in a center hole of the ceramic tube, and the other end of the optical fiber penetrates out of the tail end of the high-temperature