Transverse vibration modes analysis and acoustic response in optical fibers

Fiber optic sensors are often used as acoustic to detect sound waves because of their apparent advantages, such anti-electromagnetic interference and strong adaptation the environment. The transverse vibration mode fiber caused by wave can be obtained, principle optical sensor signal was explored using a simple model. It is found that effectively cause change in birefringence only when number azimuthal modes 2, detected sensor. found, analyzing detection mechanism, spectral width proportional impedance surrounding medium, interaction between TR22 medium much weaker than TR21 mode. This provides theoretical basis for signals sensors.