Submicron diameter single crystal sapphire optical fiber

Hill, Cary; Homa, Daniel; Liu, Bo; Yu, Zhihao; Wang, Anbo; Pickrell, Gary

doi:10.1016/j.matlet.2014.09.105

Submicron diameter single crystal sapphire optical fiber

Journal Article · Thu Oct 02 00:00:00 EDT 2014 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2014.09.105· OSTI ID:1258640

Hill, Cary ^[1]; Homa, Daniel ^[2]; Liu, Bo ^[2]; ^[2]; Wang, Anbo ^[2]; Pickrell, Gary ^[2]

Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Virginia Polytechnic Institute and State University
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

In this work, a submicron-diameter single crystal sapphire optical fiber was demonstrated via wet acid etching at elevated temperatures. Etch rates on the order 2.3 µm/hr were achievable with a 3:1 molar ratio sulfuric-phosphoric acid solution maintained at a temperature of 343°C. A sapphire fiber with an approximate diameter of 800 nm was successfully fabricated from a commercially available fiber with an original diameter of 50 µm. The simple and controllable etching technique provides a feasible approach to the fabrication of unique waveguide structures via traditional silica masking techniques. The ability to tailor the geometry of sapphire optical fibers is the first step in achieving optical and sensing performance on par with its fused silica counterpart.

Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Fossil Energy (FE)

Grant/Contract Number:: FE0012274

OSTI ID:: 1258640

Alternate ID(s):: OSTI ID: 1246566

Journal Information:: Materials Letters, Journal Name: Materials Letters Journal Issue: C Vol. 138; ISSN 0167-577X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Application of Sapphire-Fiber-Bragg-Grating-Based Multi-Point Temperature Sensor in Boilers at a Commercial Power Plant Yang, Shuo; Homa, Daniel; Heyl, Hanna Sensors, Vol. 19, Issue 14 https://doi.org/10.3390/s19143211	journal	July 2019

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36 MATERIALS SCIENCE
Fiber optic sensing
Photonic waveguides
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Submicron diameter single crystal sapphire optical fiber

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