Femtosecond fiber Bragg grating fabrication with adaptive optics aberration compensation

Published on 2018-12-06T13:51:28Z (GMT) by
We present fiber Bragg gratings (FBGs) fabricated using adaptive optics aberration compensation for the first time. The FBGs are fabricated with a femtosecond laser by the point-by-point method using an air-based objective lens, removing the requirement for immersion oil or ferrules. We demonstrate a general phase correction strategy that can be used for accurate fabrication at any point in the fiber cross-section. We also demonstrate a beam shaping approach that nullifies the aberration when focused inside a central fiber core. Both strategies give results which are in excellent agreement with coupled-mode theory. An extremely low wavelength polarization sensitivity of 4 pm is reported.

Cite this collection

Fells, Julian; Salter, Patrick; Woolley, Matthew; Morris, Stephen; Booth, Martin (2018): Femtosecond fiber Bragg grating fabrication with adaptive

optics aberration compensation. The Optical Society. Collection.