Magnification of mask fabricated fibre Bragg gratings |
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Authors: | Prohaska J.D. Snitzer E. Rishton S. Boegli V. |
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Affiliation: | Rutgers Univ., Piscataway, NJ, USA; |
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Abstract: | Bragg gratings have been formed in optical fibres by diffraction of a phase mask. This technique is expanded by allowing for the possibility of shifting the Bragg wavelength for a fixed mask periodicity. This method uses a simple lens to introduce a curvature on to the wavefront of the diffracting light that results in a magnification of the original periodicity formed by the mask. The authors show experimentally that the Bragg wavelength is shifted to a shorter wavelength by the addition of a converging lens before the mask.<> |
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