Influence of Grating Fabrication on Radiation Sensitivity of Fiber Bragg Gratings

Song Lin; Jing Jin; Ningfang Song; Gongliu Yang; Yuntian Jiang

doi:10.1117/12.975958

15 October 2012 Influence of grating fabrication on radiation sensitivity of fiber Bragg gratings

Song Lin, Jing Jin, Ningfang Song, Gongliu Yang, Yuntian Jiang

Proceedings Volume 8418, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems; 84181J (2012) https://doi.org/10.1117/12.975958
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

Fiber Bragg Gratings (FBGs) are candidates for a number of applications in space-borne systems not only owing to their optical functionality but also because they have low mass, small dimensions, and because they are immune to electromagnetic interference. In the case of Earth observation and telecommunication satellites the multiplexing in the optical domain, based on the FBGs, allows a significant reduction of the complexity of on-board electronic systems. Another perspective domain is the fiber sensor systems, such as strain sensors integrated into fuel tanks or structural health monitoring of large space structures. In order to be actually used in space-born systems, FBGs must demonstrate a high stability of their properties over the whole mission time. However, radiation may affect its properties. The possible ways of improving the radiation tolerance of FBGs should be researched. The influence of grating fabrication on radiation sensitivity of the FBGs has been investigated experimentally in this paper. The FBGs were fabricated in different process and GeO₂ concentrations. Pre-irradiation and H₂-loading were applied to change the radiation sensitivity of the FBGs. The FBGs were fabricated in photosensitive fiber and coupling single mode fiber with a GeO₂ concentration in a range from 0.33 to 23 mol%. The lowest Bragg wavelength shift (13 pm) was obtained by a grating written in photosensitive fiber PSF-GeB-125, with pre-irradiation and without H₂-loading for a total dose of about 50 kGy.

Citation Download Citation

Song Lin, Jing Jin, Ningfang Song, Gongliu Yang, and Yuntian Jiang "Influence of grating fabrication on radiation sensitivity of fiber Bragg gratings", Proc. SPIE 8418, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems, 84181J (15 October 2012); https://doi.org/10.1117/12.975958

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KEYWORDS

Fiber Bragg gratings

Optical fibers

Gamma radiation

Temperature metrology

Radiation effects

Aluminum

Sensors

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