Fiber-optic ultrasonic hydrophone using short Fabry-Perot cavity with multilayer reflectors deposited on small stub.

A fiber-optic probe with dielectric multilayer films deposited on a small stub is studied for mega-hertz ultrasonic-wave detection in water. The small stub with a short Fabry-Perot cavity and distributed reflectors is attached on the fiber end. The structure is mechanically strong and withstands intense ultrasonic pressure. Ultrasonic waves at 1.56MHz are successfully detected in water with a good signal-to-noise ratio. The working principle and the characteristics are studied by comparing the ultrasonic sensitivity with that of a conventional piezoelectric hydrophone. The distance response and directional response are also investigated.

[1]  Wolfgang Eisenmenger,et al.  The fiber optic probe hydrophone , 1994, 1994 Proceedings of IEEE Ultrasonics Symposium.

[2]  B. Granz,et al.  PVDF hydrophone for the measurement of shock waves (lithotripsy) , 1989 .

[3]  Stefania Campopiano,et al.  Underwater Acoustic Sensors Based on Fiber Bragg Gratings , 2009, Security + Defence.

[4]  P. A. Lewin,et al.  Miniature piezoelectric polymer ultrasonic hydrophone probes , 1981 .

[5]  P. Beard,et al.  A Fabry-Perot fiber-optic ultrasonic hydrophone for the simultaneous measurement of temperature and acoustic pressure. , 2009, The Journal of the Acoustical Society of America.

[6]  Kentaro Nakamura,et al.  Pressure Sensitivity of a Fiber-Optic Microprobe for High-Frequency Ultrasonic Field , 1999 .

[7]  G. E. P. M. van Venrooij,et al.  Measurement of ultrasound velocity in human tissue , 1971 .

[8]  V. Wilkens,et al.  Fiber-optic multilayer hydrophone for ultrasonic measurement , 1999 .

[9]  Keiichi Inoue,et al.  Fiber optic multipoint pressure and temperature sensing system using BOF/DWPR , 2011, International Conference on Optical Instruments and Technology.

[10]  B. Culshaw,et al.  Acousto-ultrasonic sensing using fiber Bragg gratings , 2003 .

[11]  L. Adler,et al.  Determination of the Nonlinearity Parameter B/A for Water and m‐Xylene , 1962 .

[12]  A S Daryoush,et al.  Development of calibration techniques for ultrasonic hydrophone probes in the frequency range from 1 to 100 MHz. , 2009, Ultrasonics.

[13]  R. C. Preston,et al.  PVDF membrane hydrophone performance properties and their relevance to the measurement of the acoustic output of medical ultrasonic equipment , 1983 .

[14]  Bo Shen,et al.  Fiber-optic ultrasonic probe based on refractive-index modulation in water , 2011, International Conference on Optical Fibre Sensors.

[15]  K C Shotton,et al.  A pvdf membrane hydrophone for operation in the range 0.5 Mhz to 15 Mhz. , 1980, Ultrasonics.

[16]  G. Wild,et al.  Acousto-Ultrasonic Optical Fiber Sensors: Overview and State-of-the-Art , 2008, IEEE Sensors Journal.

[17]  H. Taylor,et al.  Embedded fiber-optic Fabry-Perot ultrasound sensor , 1990, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[18]  P A Lewin,et al.  Sensitivity of ultrasonic hydrophone probes below 1 MHz. , 2000, Ultrasonics.

[19]  Paul C. Beard,et al.  Miniature optical fibre ultrasonic hydrophone using a Fabry-Perot polymer film interferometer , 1997 .

[20]  Yoshimura,et al.  Development of an optical fiber hydrophone with fiber Bragg grating , 2000, Ultrasonics.

[21]  C. Koch,et al.  Coated fiber-optic hydrophone for ultrasonic measurement , 1996 .

[22]  Brian Culshaw,et al.  The Detection of Ultrasound Using Fiber-Optic Sensors , 2008 .

[23]  B. Granz,et al.  PVDF hydrophone for the measurement of shock waves , 1988, 6th International Symposium on Electrets,(ISE 6) Proceedings..

[24]  J. Staudenraus,et al.  Fibre-optic probe hydrophone for ultrasonic and shock-wave measurements in water , 1993 .

[25]  Yosuke Mizuno,et al.  High-speed measurement of refractive index using dielectric multilayer films deposited on optical fiber end , 2012, Other Conferences.

[26]  Volker Wilkens,et al.  Characterization of an optical multilayer hydrophone with constant frequency response in the range from 1 to 75 MHz. , 2003, The Journal of the Acoustical Society of America.

[27]  P A Lewin,et al.  Acousto-optic, point receiver hydrophone probe for operation up to 100 MHz. , 2005, Ultrasonics.

[28]  Yosuke Mizuno,et al.  Refractive index sensor for liquids and solids using dielectric multilayer films deposited on optical fiber end surface , 2011 .

[29]  Y. Komatsu,et al.  A Proposal of Temperature Sensing Using a Thin-Film Bandpass Filter and Dual-Wavelength Push–Pull Reflectometry , 2008, IEEE Photonics Technology Letters.

[30]  V. Wilkens,et al.  Frequency response of fiber-optic multilayer hydrophones: experimental investigation and finite element simulation , 2002, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.