Ultra-long-distance (230 km) FBG sensor system

Takanori Saitoh; Kenichi Nakamura; Yoshifumi Takahashi; Hiroyuki Iida; Yoshimitsu Iki; Koichiro Miyagi

doi:10.1117/12.785986

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16 May 2008 Ultra-long-distance (230 km) FBG sensor system

Takanori Saitoh, Kenichi Nakamura, Yoshifumi Takahashi, Hiroyuki Iida, Yoshimitsu Iki, Koichiro Miyagi

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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70046C (2008) https://doi.org/10.1117/12.785986
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

An ultra-long-distance Fiber Bragg Grating (FBG) sensor system using a high-speed swept-wavelength light source (HSLS) is proposed and demonstrated. The light output of the HSLS is amplified and turned on and off, and its timing is synchronized to the sweep signal of the HSLS to reduce optical noise caused by Rayleigh scattering from the transmission fiber. This system can detect changes in FBG reflection wavelengths even when the FBGs are located at a distance of 230 km.

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Takanori Saitoh, Kenichi Nakamura, Yoshifumi Takahashi, Hiroyuki Iida, Yoshimitsu Iki, and Koichiro Miyagi "Ultra-long-distance (230 km) FBG sensor system", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70046C (16 May 2008); https://doi.org/10.1117/12.785986

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