CO2-laser-based ablation of glass fibers for fiber-component manufacturing

verfasst von
Eike Brockmüller, Lukas Kleihaus, Felix Wellmann, Roland Lachmayer, Jörg Neumann, Dietmar Kracht
Abstract

Fiber-based laser and amplifier systems provide highest beam quality in combination with high output power. Specialty fiber types like photonic crystal fibers, chirally-coupled-core fibers, and fibers with custom pump-cladding designs are optimized to achieve further power scaling beyond current limitations. However, such fiber designs can usually not integrated in an all-fiber design and thus do not reach their full potential because fiber-based components such as signal-pump combiners are not available. We present a precision CO2-laser based ablation process, which is used to machine the cladding of optical fibers in order to enable the manufacturing of efficient side-fused signal-pump combiners. We show the restructuring or entire removal of optical claddings and the structural evaluation by using scanning electron microscope imaging. The machining method allows for a symmetrical cladding modification and forms high quality surfaces which show low scattering loss of <0.02dB. This is confirmed by inserting up to 97.5W of optical power into the machined optical fibers and measuring the transmission loss.

Organisationseinheit(en)
Institut für Produktentwicklung und Gerätebau
QuantumFrontiers
Externe Organisation(en)
Laser Zentrum Hannover e.V. (LZH)
Typ
Konferenzaufsatz in Fachzeitschrift
Journal
Procedia CIRP
Band
111
Seiten
621-624
Anzahl der Seiten
4
ISSN
2212-8271
Publikationsdatum
2022
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Steuerungs- und Systemtechnik, Wirtschaftsingenieurwesen und Fertigungstechnik
Elektronische Version(en)
https://doi.org/10.1016/j.procir.2022.08.164 (Zugang: Offen)