Use of a sapphire fiber as a transmission line

Author

Moriya, Tadashi ; Tagawa, Norio ; Seki, Yoshiaki ; Tanahashi, Yoshikatu

Author_Institution

Tokyo Metropolitan Univ., Japan

Volume

2

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

1459

Abstract

Ultrasonic propagation in the sapphire fiber was analyzed using the Pochlamer-Chree theory as stated in L. Pochlamer (1876), and conversion method from the transducer to thin fiber, and that from the fiber to the water were simulated using PZFLEX. The experimental results for the dispersion curves for L(0,1) mode in the frequency range of 1-20 MHz coincided with the theoretical curve. The simulation results for the tapered transmission line used as a mechanical transducer show that the optimum shape is required in order to excite the L(0,1) mode is confined at the peripheral region, radiation mechanism of ultrasonic wave from the sapphire rod was considered as a radiation from the grating formed on the surface of the rod.

Keywords

sapphire; transducers; transmission lines; ultrasonic propagation; 1 to 20 MHz; L(0,1) mode; PZFLEX; Pochlamer-Chree theory; conversion method; dispersion curves; mechanical transducer; optimum shape; peripheral region; radiation mechanism; sapphire fiber; sapphire rod; tapered transmission line; theoretical curve; thin fiber; ultrasonic propagation; ultrasonic wave; Analytical models; Frequency; Optical fiber cables; Optical fiber theory; Power cables; Pulse measurements; Shape; Transmission line theory; Transmission lines; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics, 2003 IEEE Symposium on

Print_ISBN

0-7803-7922-5

Type

conf

DOI

10.1109/ULTSYM.2003.1293180

Filename

1293180