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Inscription of fiber Bragg gratings with femtosecond pulses using a phase mask scanning technique

: Thomas, J.; Wikszak, E.; Clausnitzer, T.; Fuchs, U.; Zeitner, U.D.; Nolte, S.; Tünnermann, A.


Applied physics. A 86 (2007), Nr.2, S.153-157
ISSN: 0340-3793
ISSN: 0721-7250
ISSN: 0947-8396 (Print)
ISSN: 1432-0630 (Online)
Fraunhofer IOF ()

We report on the fabrication of highly efficient fiber Bragg gratings (FBG) in non-photosensitive fibers based on nonlinear absorption of fs laser light. Up to 40 mm long gratings with a transmission of T = -25 dB at the Bragg reflection wavelength were obtained and their coupling constant determined by spectral analysis. Therefore, a phase mask scanning technique with appropriate control of the focus was established.