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Point-by-point inscription of apodized fiber Bragg gratings

: Williams, R.J.; Voigtländer, C.; Marshall, G.D.; Tünnermann, A.; Nolte, S.; Steel, M.J.; Withford, M.J.


Optics Letters 36 (2011), Nr.15, S.2988-2990
ISSN: 0146-9592
Fraunhofer IOF ()

We demonstrate apodized fiber Bragg gratings inscribed with a point-by-point technique. We tailor the grating phase and coupling amplitude through precise control over the longitudinal and transverse position of each laser-inscribed modification. This method of apodization is facilitated by the highly-localized, high-contrast modifications generated by focussed IR femtosecond laser inscription. Our technique provides a simple method for the design and implementation of point-by-point fiber Bragg gratings with complex apodization profiles.