Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 34, Issue 4, Pages 199-202Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2022.3146610
Keywords
3D-printed silica optical fiber; optical losses; thermal annealing
Funding
- Australian Research Council (ARC) Linkage Infrastructure, Equipment and Facilities (LIEF) on the National Fiber Facility at University of New South Wales (UNSW), Sydney [LE0883038, LE100100098]
- UNSW Materials and Manufacturing Futures Institute [PS64082-SHIR3]
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The study found that an irreversible reduction in optical losses can be achieved through multiple annealing cycles at 800 degrees Celsius. Changes in Raman spectroscopy confirmed densification of the core, and the temperature-dependent loss in the fiber was consistent with modal field overlap at the core-cladding interface.
Annealing effects on optical losses in silica optical fiber drawn from 3D-printed preform were investigated. An irreversible reduction in loss was observed through multiple annealing cycles at a temperature T = 800 degrees C. Changes in Raman spectroscopy confirm densification of the core as the stresses in glass relax with annealing. The temperature-dependent loss in the 3D printed fiber is consistent with modal field overlap at the core-cladding interface.
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