GUDRA T, MUC S. A Study of Interaction of Ultrasonic and Optical Wave in Optical Fiber Using the Air Gap. Arch. Acoust. [Internet]. 2013 Oct. 25 [cited 2025 Apr. 28];36(3):613–628. Available from: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/168