Thermally robust and highly stable method for splicing silica glass fiber to crystalline sapphire fiber

• DOI: 10.1364/ao.479732
• Publication Date: 2023-01-12T21:00:33Z
• Authors: Farhan Mumtaz; Dinesh Reddy Alla; Muhammad Roman; Bohong Zhang; Jeffrey D. Smith; Rex E. Gerald; Ronald J. O’Malley; Jie Huang
• Keywords: splice

This research reports an advancement in splicing silica glass fiber to sapphire single-crystal optical (SCF) using a specialized processing device, including data that demonstrate the thermal stability of splice 1000°C. A filament heating process was used produce robust between dissimilar fibers. femtosecond laser is inscribe Bragg gratings sensor into SCF measure high-temperature capabilities and signal attenuation characteristics joint. The experimental results proposed method produces joint robust, stable, repeatable, withstands temperatures up 1000°C with low 0.5 dB. allows placement SCF-based sensors extreme environments encountered various engineering fields, such as nuclear, chemical, aviation, metals manufacturing, enable improvements monitoring, product quality, production efficiency.