Thermally Stable Type II FBGs Written Through Polyimide Coatings of Silica-Based Optical Fiber

• Published in: IEEE photonics technology letters Vol. 29; no. 21; pp. 1780 - 1783
• Main Authors: Grobnic, Dan, Hnatovsky, Cyril, Mihailov, Stephen J.
• Format: Journal Article
• Language: English
• Published: IEEE 01.11.2017
• Subjects: Coatings; fiber Bragg gratings; Fiber gratings; Gratings; Optical fibers; polyimide; Polyimides; Thermal stability; Ultrafast optics

Type II-IR fiber Bragg gratings (FBGs) were written directly through the protective polyimide coatings of off-the-shelf pure silica core and standard telecom Ge-doped silica core single mode fibers using ultrafast IR radiation and the phase mask FBG writing method. Using a short focal length acylind...