Fiber-Optic High-Temperature Sensor Based on Thin-Core Fiber Modal Interferometer

@article{Zhu2010FiberOpticHS,
  title={Fiber-Optic High-Temperature Sensor Based on Thin-Core Fiber Modal Interferometer},
  author={Jing-Jing Zhu and A Ping Zhang and Tian-hao Xia and Sailing He and Wei Xue},
  journal={IEEE Sensors Journal},
  year={2010},
  volume={10},
  pages={1415-1418}
}
We present a new fiber-optic high-temperature sensor based on a thin-core fiber (TCF) modal interferometer. A thin-core fiber, whose core radius is about half of the radius of a standard single-mode fiber (SMF), is inserted between standard SMFs to form an extremely simple in-fiber modal interferometer. The wavelength of the transmission dip increases linearly with the temperature. Experimental demonstration shows that it can be used to sense temperature up to 850 °C with a sensitivity of about… CONTINUE READING
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