Crystalline silicon core fibres from aluminium core preforms
Name
Nat_Comm_Chong paper + supp info.pdf
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1.54 MB
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Adobe PDF
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Author(s)
Hou, Chong
Jia, Xiaoting
Wei, Lei
Tan, Swee-Ching
Zhao, Xin
Fink, Yoel
Joannopoulos, John
Date Issued
February 2015
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Hou, Chong, Xiaoting Jia, Lei Wei, Swee-Ching Tan, Xin Zhao, John D. Joannopoulos, and Yoel Fink. “Crystalline Silicon Core Fibres from Aluminium Core Preforms.” Nat Comms 6 (February 20, 2015): 6248.
Version
Author's final manuscript
Abstract
Traditional fibre-optic drawing involves a thermally mediated geometric scaling where both the fibre materials and their relative positions are identical to those found in the fibre preform. To date, all thermally drawn fibres are limited to the preform composition and geometry. Here, we fabricate a metre-long crystalline silicon-core, silica-cladded fibre from a preform that does not contain any elemental silicon. An aluminium rod is inserted into a macroscopic silica tube and then thermally drawn. The aluminium atoms initially in the core reduce the silica, to produce silicon atoms and aluminium oxide molecules. The silicon atoms diffuse into the core, forming a large phase-separated molten silicon domain that is drawn into the crystalline silicon core fibre. The ability to produce crystalline silicon core fibre out of inexpensive aluminium and silica could pave the way for a simple and scalable method of incorporating silicon-based electronics and photonics into fibres.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1038/ncomms7248
