Observations concerning the reply to our comments on “Fiberoptic ultrasonic sensor using Raman-Nath light diffraction”

摘要

Kwiek et al. comment further on the reply by Wu et al. (ibid.np.956-7), stating that Wu et al. acknowledge that their theoreticalnmodel is not applicable. The effect of the ultrasound on the light beamnranges from light deflection, via the Raman-Nath regime, to thentransition regime approaching Bragg diffraction for the frequency rangenof 3-15 MHz and under the experimental conditions indicated by thenauthors. There is no question that optically detectable signals arenreceived; however, they cannot be described by the theoretical modelncited by the authors