Optimizing fiber component manufacturing by observing the modal composition and PER in real-time

Nils Haverland; Eike Brockmüller; Fabian Kranert; Jörg Neumann; Dietmar Kracht

doi:10.1117/12.3000926

12 March 2024 Optimizing fiber component manufacturing by observing the modal composition and PER in real-time

Nils Haverland, Eike Brockmüller, Fabian Kranert, Jörg Neumann, Dietmar Kracht

Proceedings Volume 12866, Components and Packaging for Laser Systems X; 1286606 (2024) https://doi.org/10.1117/12.3000926
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Fiber-based laser and amplifier systems provide high output power, excellent beam quality and easy handling by utilizing a setup consisting of fiber components like signal-pump combiners and cladding-light strippers. Large-mode-area fibers are used in these systems to improve the performance while maintaining single-mode operation. Compared to pure single-mode fibers, these fibers always guide higher order modes, which can have an impact on the system’s performance. An instrument was developed based on the S²-method, which is able to perform high-speed, in-line measurements of the modal composition and polarization extinction ratio. This device is used to monitor the fiber component manufacturing process using large-mode-area fibers in real-time, enabling us to improve critical process steps and, thereby, optimize the manufactured components, namely signal-pump combiners and fiber endcaps.

Conference Presentation

Citation Download Citation

Nils Haverland, Eike Brockmüller, Fabian Kranert, Jörg Neumann, and Dietmar Kracht "Optimizing fiber component manufacturing by observing the modal composition and PER in real-time", Proc. SPIE 12866, Components and Packaging for Laser Systems X, 1286606 (12 March 2024); https://doi.org/10.1117/12.3000926

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