Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4326
Title: Asymmetric transverse-load characteristics and polarization dependence of long-period fiber gratings written by a focused CO₂ laser
Authors: Wang, Y
Wang, D 
Jin, W 
Rao, YJ
Keywords: Birefringence
Carbon dioxide
Laser pulses
Natural frequencies
Polarization
Wavelength
Issue Date: 1-Jun-2007
Publisher: Optical Society of America
Source: Applied optics, 1 June 2007, v. 46, no. 16, p. 3079-3086 How to cite?
Journal: Applied optics 
Abstract: Asymmetric transverse-load characteristics and the polarization dependence of long-period fiber gratings (LPFGs) written by high-frequency CO₂ laser pulses are investigated in detail. It is demonstrated that the resonant wavelength is dependent on the direction of the applied force and on the polarization state of the input light; however, the coupling strength is independent of these parameters. When a transverse load is applied along different orientations of the LPFG, the resonant wavelength may be shifted toward the longer wavelength, the shorter wavelength, or hardly shifted, whereas the absolute value of peak transmission attenuation is linearly decreased with an increase of the applied transverse load, with almost no sensitivity to the load direction. These unique transverse-load characteristics and the polarization dependence are due to the load-induced birefringence that leads to the rotation of optical principal axes in the LPFG.
URI: http://hdl.handle.net/10397/4326
ISSN: 0003-6935
DOI: 10.1364/AO.46.003079
Rights: © 2007 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-46-16-3079. 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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