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High-frequency ultrasonic hydrophone based on a cladding-etched DBR fiber laser
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2008 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 20, no 5-8, 548-550 p.Article in journal (Refereed) Published
Abstract [en]

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 mu m.

Place, publisher, year, edition, pages
2008. Vol. 20, no 5-8, 548-550 p.
Keyword [en]
fiber Bragg grating, fiber laser, fiber-optic sensor, ultrasonic, hydrophone, transducers, mhz
URN: urn:nbn:se:kth:diva-17725DOI: 10.1109/lpt.2008.918841ISI: 000257952800073OAI: diva2:335770
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2013-11-19Bibliographically approved

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He, Sailing
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