Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Ultrashort pulse point-by-point written aperiodic fiber Bragg gratings for suppression of OH-emission lines

: Goebel, T.A.; Bharathan, G.; Ams, M.; Richter, D.; Krämer, R.G.; Heck, M.; Siems, M.P.; Fuerbach, A.; Nolte, S.


Navarro, R. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III : 10-15 June 2018, Austin, Texas, United States
Bellingham, WA: SPIE, 2018 (Proceedings of SPIE 10706)
ISBN: 978-1-5106-1966-1
ISBN: 978-1-5106-1965-4
Paper 107066N, 9 S.
Conference "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation" <3, 2018, Austin/Tex.>
Conference "Astronomical Telescopes and Instrumentation" <2018, Austin/Tex.>
Fraunhofer IOF ()

We demonstrate the direct inscription of aperiodic fiber Bragg gratings (AFBGs) for their use as in-fiber filter elements. The modifications are induced by focusing ultrashort laser pulses with an oil-immersion objective into the fiber core. We apply an advanced point-by-point inscription technique for flexible period adaptation. The fabricated AFBGs are targeted on the suppression of 10 lines in a single grating and simulations based on the specific design show excellent agreement. Furthermore, we discuss the application in astronomy as filters for the suppression of OH emission lines.