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Journal Article
Core-on-clad Method for Fabricating Mid-infrared Optical Fibers
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- Issue Date
- 2016-01
- Citation
- Journal of Non-Crystalline Solids, v.431, pp.72-75
- ISSN
- 0022-3093
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- We introduce a core-on-clad (COC) method for the fabrication of mid-IR fibers using a single crucible, which is different from a conventional double crucible process. The COC method involves stacking a core rod on a cladding rod in the single crucible and drawing it into the optical fiber directly. With this method, we developed a mid-IR fiber having a core-clad diameter ratio of 90%. By inserting a steel ring between the core and clad rods, the core-clad ratio was further reduced by about 82% and 52%, which depended on the inner hole sizes of the ring. After purification of raw materials, the transmission loss was measured at 1.2 dB/m for the wavelength of 3 μm and 0.26 dB/m for 5 μm. These large core mid-IR fibers can be applied for the beam delivery of medical lasers such as Er-YAG.
- KSP Keywords
- Clad ratio, IR fibers, Large core, Mid-IR, Mid-infrared(MIR), Transmission loss, diameter ratio, medical lasers, optical fibers, raw material