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|Title: ||Ultrasonic hydrophone based on distributed Bragg reflector fiber laser|
|Authors: ||Guan, Bai-ou|
Lau, Sien Ting
Chan, Helen L. W.
|Subjects: ||Acoustic sensor|
Optical fiber transducers
|Issue Date: ||Jan-2005 |
|Citation: ||IEEE photonics technology letters, Jan. 2005, v. 16, no. 1, p. 169-171|
|Abstract: ||We demonstrate a novel fiber-optic hydrophone that uses a dual polarization distributed Bragg reflector (DBR) fiber
laser as sensing element. The operation principle is based on the modulation of the birefringence of the fiber laser by high-frequency ultrasound. By measuring the amplitude and frequency of the sidebands as well as the polarization beat frequency of the output of the fiber laser using a photodetector and a radio-frequency spectrum analyzer, the amplitude and frequency of the acoustic pressure, and temperature can be determined simultaneously. The DBR fiber laser hydrophone has a linear response to acoustic pressure and can detect acoustic frequency up to at least 40 MHz.|
|Rights: ||© 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
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|Type: ||Journal/Magazine Article|
|Appears in Collections:||AP Journal/Magazine Articles|
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