论文信息 - Fiber Bragg grating microphone system

Fiber Bragg grating microphone system

A fiber Bragg grating microphone has been developed and tested in the audible frequency range. The fiber Bragg grating is longitudinally attached to a membrane that vibrates in response to acoustic vibrations and is prestrained. The frequency and amplitude of the sound are encoded in the wavelength shift. The microphone can also pick up voices dynamically from a distance of a few meters. The simplicity of principle and structure of this fiber grating sensor provides scope for commercialization as an optical microphone.

[1] Strain-induced phase-matching and tunability of acoustic gratings in fibers , 2001 .

[2] A. Minardo,et al. Response of fiber Bragg gratings to longitudinal ultrasonic waves , 2005, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

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

[4] N. E. Fisher,et al. Combined ultrasound and temperature sensor using a fibre Bragg grating , 1999 .

[5] 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.

[6] A. Othonos. Fiber Bragg gratings , 1999 .

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

[8] Hiroshi Tsuda,et al. Ultrasound and damage detection in CFRP using fiber Bragg grating sensors , 2006 .

[9] T. K. Gangopadhyay,et al. Prospects for Fibre Bragg Gratings and Fabry-Perot Interferometers in fibre-optic vibration sensing , 2004 .