IEEE Photonics Journal (Jan 2011)

An Optical Fiber Tip Micrograting Thermometer

  • Jing Feng,
  • Ming Ding,
  • Jun-Long Kou,
  • Fei Xu,
  • Yan-Qing Lu

DOI
https://doi.org/10.1109/JPHOT.2011.2165835
Journal volume & issue
Vol. 3, no. 5
pp. 810 – 814

Abstract

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An ~ 12-μm-long Bragg grating was engraved in an ~ 5-μm-diameter optical fiber tip by focused ion beam (FIB) milling. An ~ 10-dB extinction was achieved at 1570 nm with only 11 indentations. The grating was used for temperature sensing, and it exhibited a temperature sensitivity of ~ 22 pm°C.

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