Initial results on the fabrication of long-period fiber Bragg gratings with a CO₂ laser
Date
2004
Authors
Armitage, J.
Hsu, M.
Munch, J.
Corbett, K.
Grant, K.
Jewell, C.
Editors
Armitage, J.C.
Fafard, S.
Lessard, R.A.
Lampropoulos, G.A.
Fafard, S.
Lessard, R.A.
Lampropoulos, G.A.
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Journal article
Citation
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 2004; 5577(PART 1):247-254
Statement of Responsibility
John C. Armitage, Magnus T. L. Hsu, Jesper Munch, Kerry A. Corbett, Kenneth J. Grant and Chris Jewell
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Abstract
Long-period fiber Bragg gratings (LPG) where the grating period is much longer than the wavelength of light have many unique characteristics and find uses in gain-flattening filters and mode converters. This paper describes the characteristics of the initial LPGs fabricated at the University of Adelaide using an infrared CO2 laser. The optical system implemented promotes uniform irradiation of the full circumference of the fiber, avoiding many of the non-uniformities, associated with a single sided system. Some initial gratings have been made using this method, which typically show an attenuation of 10dB within a wavelength range (FWHM) of 8 nm. Work is now focused on improving these devices through an understanding of the writing process and its effect on the transmitted spectrum.
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© 2004 SPIE