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Intrinsic apodisation of Bragg gratings written using UV-pulse interferometry

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3 Author(s)
Cortes, P.Y. ; Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada ; Ouellette, F. ; LaRochelle, S.

The authors present a new interferometric technique for writing apodised Bragg gratings. Along the fibre, two UV-pulses interfere with a variable time delay, creating a Gaussian apodisation profile which strongly reduces the reflectivity sidelobes. This method allows the writing of truly apodised gratings by single exposure of a uniform phase-mask

Published in:

Electronics Letters  (Volume:34 ,  Issue: 4 )