Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4329
Title: Temporal thermal response of Type II–IR fiber Bragg gratings
Authors: Liao, C
Wang, D 
Li, Y
Sun, T
Grattan, KTV
Issue Date: 1-Jun-2009
Source: Applied optics, 1 June 2009, v. 48, no. 16, p. 3001-3007
Abstract: We use the phase mask method to investigate both experimentally and theoretically the temporal thermal response of Type II-IR fiber Bragg gratings inscribed by a femtosecond laser. A fast testing system is developed to measure the thermal response time by means of periodic CO₂ laser irradiation, which creates a rapid temperature change environment. The temporal thermal response is found to be independent of the heat power and the heat direction, although the grating produced destroys the axial symmetry of the fiber. The measured values of the temporal thermal response are ~230ms for heating and ~275ms for cooling, which different from the simulation results obtained from a lumped system equation. The causes of such differences are investigated in detail.
Keywords: Fiber optic components
Fiber optic sensors
Pulsed laser applications
Thermal effects
Publisher: Optical Society of America
Journal: Applied optics 
ISSN: 1559-128X
EISSN: 2155-3165
DOI: 10.1364/AO.48.003001
Rights: © 2009 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-16-3001. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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