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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 pp.
Conference "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation" <3, 2018, Austin/Tex.>
Conference "Astronomical Telescopes and Instrumentation" <2018, Austin/Tex.>
English
Conference Paper
Fraunhofer IOF ()

Abstract
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.

: http://publica.fraunhofer.de/documents/N-520876.html