All-fiber bandwidth tunable filter for high power fiber lasers

Chan, Jaclyn, Vukovic, Natasha, Codemard, Christophe A. and Zervas, Michalis N. (2020) All-fiber bandwidth tunable filter for high power fiber lasers. Dong, Liang (ed.) In Fiber Lasers XVII: Technology and Systems: Technology and Systems. vol. 11260, SPIE. 1126010-1 -1126010-6 . (doi:10.1117/12.2545640).

Record type: Conference or Workshop Item (Paper)

Abstract

We proposed and demonstrated an all-fiber broadband tunable filter, with "band-stop" characteristics using bending of a resonant coupling fiber. Unlike conventional step-index fiber bend-induced "low-pass" filtering, with this novel approach we are able to retain the "band-stop" filter characteristics and tune the long wavelength edge of the rejected spectral band whilst the short wavelength edge is fixed by fiber design. The fiber filter can be readily spliced to and integrated with high-power single mode output ytterbium-or thulium-doped fiber lasers to provide efficient filtering of four-wave-mixing and/or stimulated Raman scattering, as well as parasitic 1um lasing in erbium/ytterbium co-doped lasers.

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Accepted/In Press date: 5 February 2020

Published date: 21 February 2020

Additional Information: Publisher Copyright: © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Venue - Dates: SPIE LASE, 2020, San Francisco, California, United States<br/>, The Moscone Center, San Francisco, United States, 2020-02-02 - 2020-02-06

Keywords: High power fiber laser, Specialty optical fiber, Tunable filtering

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