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7 May 2013 Ultra-long and ultra high quality fibre Bragg gratings
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Abstract
We report the fabrication and characterisation of near perfect ultra-long fibre Bragg gratings for applications in signal processing. Narrow bandwidth down to ~few pm FWHM have fabricated using an electro-optic modulation technique, and characterised for their transfer functions and dispersion. Near perfect characteristics have been achieved with symmetric group-delay and transmission spectra. 30cm-long, ultra-high reflectivity gratings are also reported. We discuss prospects for making complex gratings with very low residual noise, opening unprecedented possiblities for signal processing in the RF, microwave and the THZ regions.
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Mathieu Gagné and Raman Kashyap "Ultra-long and ultra high quality fibre Bragg gratings", Proc. SPIE 8781, Integrated Optics: Physics and Simulations, 87810M (7 May 2013); https://doi.org/10.1117/12.2017530
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