High alumina content optical fibres by powder methods

Dunia Blaser; Sönke Pilz; Carlos Pedrido; Valerio Romano

doi:10.1117/12.2624441

19 May 2022 High alumina content optical fibres by powder methods

Dunia Blaser, Sönke Pilz, Carlos Pedrido, Valerio Romano

Proceedings Volume 12140, Micro-Structured and Specialty Optical Fibres VII; 1214008 (2022) https://doi.org/10.1117/12.2624441
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

An improvement to the Granulated Silica Method (GSM) by using thermally densified “green compacts” is described and implemented in order to produce high alumina content fibres. High alumina fibres are suitable for harsh environments at elevated temperatures due to their mechanical and optical properties. Fibres with up to 70at.% alumina in the core and up to 35at.% in the cladding (to lower the core-cladding index step) have been produced. The cores appear to be transparent for visible light. By EDX analysis diffusion of cladding material (e.g. silica) into the core, but not in the opposite direction from the core to the cladding, have been verified and are confirmed by qualitative index measurements.

Conference Presentation

Citation Download Citation

Dunia Blaser, Sönke Pilz, Carlos Pedrido, and Valerio Romano "High alumina content optical fibres by powder methods", Proc. SPIE 12140, Micro-Structured and Specialty Optical Fibres VII, 1214008 (19 May 2022); https://doi.org/10.1117/12.2624441

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