Fiber Bragg gratings in active large mode area fiber written with femtosecond pulses

Author

Thomas, Jens ; Voigtlander, Christian ; Nolte, Stefan ; Tunnermann, Andreas

Author_Institution

Inst. fur angewandte Phys., Friedrich-Schiller-Univ. Jena, Jena, Germany

fYear

2009

fDate

14-19 June 2009

Firstpage

1

Lastpage

1

Abstract

Fiber gratings allow in-line spectral control of the guided light and can be used as narrow-band reflectors or for the selective coupling of light into other fiber modes. However, fibers used in "state of the art"- fiber lasers possess material properties and geometries that make it difficult or impossible to inscribe gratings with standard cw-UV-Laser processing. These difficulties can be overcome by techniques that rely on the refractive index change caused by nonlinear absorption of focused femtosecond pulses.

Keywords

Bragg gratings; fibre lasers; high-speed optical techniques; laser materials processing; refractive index; UV-laser processing; femtosecond pulses; fiber Bragg gratings; fiber lasers; guided light; in-line spectral control; narrow-band reflectors; nonlinear absorption; refractive index; Absorption; Fiber gratings; Fiber lasers; Geometrical optics; Laser modes; Lighting control; Material properties; Narrowband; Optical coupling; Refractive index;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-4079-5

Electronic_ISBN

978-1-4244-4080-1

Type

conf

DOI

10.1109/CLEOE-EQEC.2009.5194716

Filename

5194716