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Title: High-frequency ultrasonic hydrophone based on a cladding-etched DBR fiber laser
Authors: Shao, L
Lau, ST
Dong, X
Zhang, AP
Chan, HLW 
Tam, HY 
He, S
Keywords: Fiber Bragg grating
Fiber laser
Fiber-optic sensor
Ultrasonic hydrophone
Issue Date: 15-Apr-2008
Publisher: IEEE
Source: IEEE photonics technology letters, 15 Apr. 2008, v. 20, no. 8, p. 548-550 How to cite?
Journal: IEEE photonics technology letters 
Abstract: Distributed-Bragg-reflector (DBR) fiber-laser-based ultrasonic hydrophone has been found to possess increased detectable frequency range due to the improved sensitivity in the high-frequency region when the fiber cladding thickness was reduced. A wet etching technique is utilized to reduce the fiber diameter of the DBR laser. The peak response frequency moves from 21 to 40 MHz when the fiber diameter was reduced from 125 to 68 µm.
ISSN: 1041-1135
DOI: 10.1109/LPT.2008.918841
Rights: © 2008 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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