Thermally Robust and Highly Stable Method for Splicing Silica Glass Fiber to Crystalline Sapphire Fiber


This Research Reports an Advancement in Splicing Silica Glass Fiber to Sapphire Single-Crystal Optical Fiber (SCF) using a Specialized Glass Processing Device, Including Data that Demonstrate the Thermal Stability of the Splice to 1000◦C. a Filament Heating Process Was Used to Produce a Robust Splice between the Dissimilar Fibers. a Femtosecond Laser is Used to Inscribe a Fiber Bragg Gratings Sensor into the SCF to Measure the High-Temperature Capabilities and Signal Attenuation Characteristics of the Splice Joint. the Experimental Results Demonstrate that the Proposed Splicing Method Produces a Splice Joint that is Robust, Stable, Repeatable, and Withstands Temperatures Up to 1000◦C with a Low Attenuation of 0.5 DB. the Proposed Method Allows Placement of SCF-Based Sensors in the Extreme Environments Encountered in Various Engineering Fields, Such as Nuclear, Chemical, Aviation, and Metals Manufacturing, to Enable Improvements in Process Monitoring, Product Quality, and Production Efficiency.


Materials Science and Engineering

Second Department

Electrical and Computer Engineering


U.S. Department of Energy, Grant DE-EE0009119

International Standard Serial Number (ISSN)

2155-3165; 1559-128X

Document Type

Article - Journal

Document Version


File Type





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Publication Date

10 Feb 2023