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Proceedings Paper

Fiber Bragg grating inscriptions in multimode fiber using 800 nm femtosecond laser
Author(s): Qiangzhou Rong; Xueguang Qiao
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Paper Abstract

A short fiber Bragg grating (FBG) was successfully written in a multimode fiber (MMF) tube with core and cladding diameters of 105 μm and 125 μm using 800 nm femtosecond laser. A side-illumination technique was utilized to ensure the grating inscriptions regain over the core of MMF. Both fundamental mode and high-order modes of MMF are coupled at the core-mismatch junction and appear as two well-defined resonances in transmission. Femtosecond laserwritten three FBG-types present good thermostability up to 900 °C.

Paper Details

Date Published: 28 September 2015
PDF: 3 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963463 (28 September 2015); doi: 10.1117/12.2193770
Show Author Affiliations
Qiangzhou Rong, Northwest Univ. (China)
Xueguang Qiao, Northwest Univ. (China)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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