Open AccessFiber Bragg grating fabricated in micro-single-crystal sapphire fiber
Author(s) -
Shuo Yang,
Daniel Homa,
Gary Pickrell,
Anbo Wang
Publication year - 2017
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.43.000062
Subject(s) - optics , fiber bragg grating , materials science , phosfos , photonic crystal fiber , long period fiber grating , sapphire , optical fiber , fiber , fiber laser , fiber optic sensor , graded index fiber , optoelectronics , laser , physics , composite material
This Letter introduces a fiber Bragg grating (FBG) in a micro-single-crystal sapphire fiber (micro-SFBG) for sensing applications in high-temperature and harsh environments. The FBG was fabricated by a point-by-point method via an IR-femtosecond laser in a large-diameter sapphire fiber that was then wet-hot acid etched to achieve microfiber size, which culminated in fabricating and characterizing a 9.6 μm diameter micro-SFBG. The refractive index measurement ranging from 1 to 1.75 and temperature measurement from room temperature to 1400°C are also reported.