Abstract
The results of the light propagation in the linear twisted birefringent fiber using the parallel method have been obtained [H. G. Winful, Appl. Phys. Lett. 47, 213–215 (1985)]. A conceptual design of an acoustic optical fiber sensor and the numerical calculations are given based on the amount of twist about the fiber axis generated at the output fiber end by an acoustic pressure field. If the input power, coupled into the birefringent fiber at 45°, is assumed to be 0.5 mW, and the induced output optical power is assumed to be 1.62 × 10−9 W under the twist rate condition of 1 second of arc, the minimum detectable pressure is on the order of 26 dB re: 1 μPa/Hz and the approximate modulation index is 3 × 10−3/Pa. The active area of the probe can be on the order of 1 mm and the predicted frequency response is quite broad. These results are favorable in comparison with other optical fiber pressure sensors proposed in the literature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
