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Proceedings Paper

All-fiber bandwidth tunable filter for high power fiber lasers
Author(s): Jaclyn S. Chan; Natasha Vukovic; Christophe A. Codemard; Michalis N. Zervas
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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.

Paper Details

Date Published: 21 February 2020
PDF: 6 pages
Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 1126010 (21 February 2020); doi: 10.1117/12.2545640
Show Author Affiliations
Jaclyn S. Chan, Optoelectronics Research Ctr. (United Kingdom)
Natasha Vukovic, Optoelectronics Research Ctr. (United Kingdom)
Christophe A. Codemard, SPI Lasers UK Ltd. (United Kingdom)
Michalis N. Zervas, Optoelectronics Research Ctr. (United Kingdom)
SPI Lasers UK Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 11260:
Fiber Lasers XVII: Technology and Systems
Liang Dong, Editor(s)

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