Fiber-optic physical and biochemical sensing based on transient and traveling long-period gratings
Optics Letters, Vol. 34, Issue 1, pp. 100-102 (2009)
http://dx.doi.org/10.1364/OL.34.000100
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Abstract
A fiber-optic sensing platform based on a transient and traveling long-period grating (LPG) in a single-mode optical fiber has been proposed and demonstrated. The LPG is generated by pulsed acoustic waves that propagate along the fiber. First, we demonstrate the LPG for temperature measurement along the fiber. By coating the fiber with ultrathin ionically self-assembled multilayers, we then show that the LPG is capable of detecting nanometer thickness variations of the fiber. A temperature compensation method is also proposed and demonstrated. Because the acoustically generated LPG travels along the fiber, this advance is expected to yield a highly sensitive fully distributed fiber-optic biochemical sensor.
© 2008 Optical Society of America
OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: August 18, 2008
Revised Manuscript: November 5, 2008
Manuscript Accepted: November 15, 2008
Published: December 31, 2008
Virtual Issues
Vol. 4, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Ming Han, Yunjing Wang, Yunmiao Wang, and Anbo Wang, "Fiber-optic physical and biochemical sensing based on transient and traveling long-period gratings," Opt. Lett. 34, 100-102 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-1-100
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