Abstract
We report a fabrication technique for chirped fiber Bragg gratings (CFBGs) using a flexible setup based on a poly(methyl-methacrylate) phase mask. The period of the phase mask can be thermally tuned during the inscription process, allowing the grating period of uniform fiber Bragg gratings to be shifted about by a temperature change of . In addition, CFBGs with bandwidths up to are demonstrated in nonphotosensitive fibers by IR femtosecond inscription.
© 2009 Optical Society of America
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