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.
Original language | English |
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Pages (from-to) | 548-550 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 20 |
Issue number | 8 |
DOIs | |
Publication status | Published - 15 Apr 2008 |
Keywords
- Fiber Bragg grating
- Fiber laser
- Fiber-optic sensor
- Ultrasonic hydrophone
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy (miscellaneous)