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Title: Fiber Bragg gratings with enhanced thermal stability by residual stress relaxation
Authors: Li, Yuhua
Yang, Minwei
Wang, Dongning
Lu, Jian
Sun, Tong
Grattan, Kenneth T. V.
Subjects: Fiber optic components
Fiber optic sensors
Optical fiber fabrication
Pulsed laser applications
Residual stresses
Stress relaxation
Thermodynamic stability
Ultrashort pulses
Issue Date: 26-Oct-2009
Publisher: Optical Society of America
Source: Optics express, 26 Oct. 2009, v. 17, no. 22, p. 19785-19790.
Abstract: Fiber Bragg gratings with greatly enhanced thermal stability have been fabricated by the use of femtosecond laser pulse irradiation on optical fibers with relaxed residual stress, through using high temperature annealing treatment. The grating reflectivity and resonant wavelength can be maintained for periods up to 20 hours using isothermal measurements and temperatures up to 1200 °C. No hysteresis was observed in the wavelength response when the gratings were annealed and the temperature cycled repeatedly between room temperature and 1200 ºC.
Rights: © 2009 Optical Society of America. This paper was published in Optics Express 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: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Type: Journal/Magazine Article
DOI: 10.1364/OE.17.019785
ISSN: 1094-4087
Appears in Collections:EE Journal/Magazine Articles
ME Journal/Magazine Articles

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