March 2022
Intermediate to advanced
864 pages
28h 54m
English
Content preview from Optical Fiber Sensing Technologies
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4Extrinsic Fabry–Perot Interferometer‐Based Optical Fiber Acoustic Sensing Technology
4.1 Polymer Diaphragm Optical Fiber Acoustic Sensor
Similar to Chapter 3, the fiber‐optic extrinsic Fabry–Perot interferometric () acoustic vibration sensor has a similar structure with the pressure sensor because acoustic pressure is also a small pressure. So in the sensor structure, the most important is the diaphragm material selection and structure design, which is the main topic of this section.
4.1.1 Basic Description of Fiber‐Optic Fabry–Perot Acoustic Sensor
Sound wave is a kind of micro‐pressure signal with fast frequency, which is reflected in the rapid vibration of medium. The characteristics of sound are determined by the frequency and mode ...
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