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Proceedings Paper

Research on the FBG's high-temperature sustainability influenced by the doping process
Author(s): Shuqiang Zhang; Feng Tu; Weijun Huang; Weijun Tong; Kun Zhu; Zhaolong Liao
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Paper Abstract

The numerous potential applications of UV-induced fiber Bragg gratings (FBGs) in fiber optic sensing and telecommunication have generated a significant interest in this field in recent years. However, two major factors-the photosensitivity of the fiber in which the grating is written and the thermal stability of the grating-are of prime importance in terms of choosing the most appropriate fiber to use and of the long-term functionality of the grating over a wide range of temperatures. Based on the plasma chemical vapor deposition (PCVD) process, the high Ge (Germanium) and Ge/B (Germanium/Boron) co-doped photosensitive fiber were developed. It is mature technique that to precise control the dopant quantity by PCVD process. The photosensitive fibers with different doping composition and doping concentration have been studied. Based on the experimental results obtained from studies of several kinds of photosensitive fiber on both the photosensitivity and the temperature sustainability of the FBGs written into them, the experimental results exhibit that the Boron dopant brings deleterious influence on the FBG's high-temperature sustainability. The FBG sustainable temperature will become lower than 500°C when the Boron concentration reaches 14% in germanium highly doped photosensitive fiber.

Paper Details

Date Published: 16 February 2011
PDF: 6 pages
Proc. SPIE 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI, 789403 (16 February 2011); doi: 10.1117/12.871979
Show Author Affiliations
Shuqiang Zhang, Yangtze Optical Fibre and Cable Co., Ltd. (China)
Feng Tu, Yangtze Optical Fibre and Cable Co., Ltd. (China)
Weijun Huang, Wuhan National Lab. for Optoelectronics (China)
Weijun Tong, Yangtze Optical Fibre and Cable Co., Ltd. (China)
Kun Zhu, Yangtze Optical Fibre and Cable Co., Ltd. (China)
Zhaolong Liao, Yangtze Optical Fibre and Cable Co., Ltd. (China)


Published in SPIE Proceedings Vol. 7894:
Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI
Israel Gannot, Editor(s)

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