Initial results on the fabrication of long-period fiber Bragg gratings with a CO<sub>2</sub> laser

John C. Armitage; Magnus Tze Loong Hsu; Jesper Munch; Kerry A. Corbett; Kenneth John Grant; Chris Jewell

doi:10.1117/12.566971

20 December 2004 Initial results on the fabrication of long-period fiber Bragg gratings with a CO₂ laser

John C. Armitage, Magnus Tze Loong Hsu, Jesper Munch, Kerry A. Corbett, Kenneth John Grant, Chris Jewell

Proceedings Volume 5577, Photonics North 2004: Optical Components and Devices; (2004) https://doi.org/10.1117/12.566971
Event: Photonics North, 2004, Ottawa, Ontario, Canada

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.

Citation Download Citation

John C. Armitage, Magnus Tze Loong Hsu, Jesper Munch, Kerry A. Corbett, Kenneth John Grant, and Chris Jewell "Initial results on the fabrication of long-period fiber Bragg gratings with a CO₂ laser", Proc. SPIE 5577, Photonics North 2004: Optical Components and Devices, (20 December 2004); https://doi.org/10.1117/12.566971

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