Laser Glass deposition of single-mode glass fibers for the fabrication of chip-scale photonic circuits

verfasst von: Florian Spengler, Sven Olaf Waldhauer, Moritz Hinkelmann, Jörg Neumann, Stefan Kaierle, Dietmar Kracht
Abstract: The use of glass, particularly fused silica (FS), instead of polymers or semiconductors as optical waveguide material is advantageous due to broadband transmission, reduced propagation losses, and enhanced thermal and mechanical stability. In this contribution, laser glass deposition for the chip-scale fabrication of FS-based optical waveguides is investigated. We use a CO2 laser with emission at a wavelength of 10.6 μm to weld conventional single-mode glass fibers onto a FS substrate, with the aim of maintaining the waveguide properties of the fibers. Synchronized translational and rotational axis movements allow for positioning of the waveguides in arbitrary geometries. Furthermore, a CO2 laser-based cleaving method is introduced, which facilitates on-chip creation of waveguide end facets for optical coupling. An analysis of the cleave geometry in dependence on process parameters as well as optical coupling losses are presented. Coupling losses of 0.88 dB for a laser-cleave and propagation losses of 0.56 dB/cm for a 10 cm on-chip welded fiber were achieved. The results pave the way for on-chip integration of fiber-based systems like lasers, sensing devices or optical communication networks.
Organisationseinheit(en): Institut für Transport- und Automatisierungstechnik
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Externe Organisation(en): Laser Zentrum Hannover e.V. (LZH)
Typ: Konferenzaufsatz in Fachzeitschrift
Journal: Procedia CIRP
Band: 124
Seiten: 484-488
Anzahl der Seiten: 5
ISSN: 2212-8271
Publikationsdatum: 2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Steuerungs- und Systemtechnik, Wirtschaftsingenieurwesen und Fertigungstechnik
Elektronische Version(en): https://doi.org/10.1016/j.procir.2024.08.158 (Zugang: Offen)