Thin-Core-Fiber-Based Long-Period Fiber Grating for High-Sensitivity Refractive Index Measurement

  title={Thin-Core-Fiber-Based Long-Period Fiber Grating for High-Sensitivity Refractive Index Measurement},
  author={Cailing Fu and Xiaoyong Zhong and Changrui Liao and Yi-ping Wang and Ying Wang and Jian Tang and Shen Liu and Qiao Wang},
  journal={IEEE Photonics Journal},
We experimentally demonstrated the fabrication of asymmetric long-period fiber gratings (LPFGs) in thin core fiber by use of focused CO2 laser beam. The proposed device exhibits a high extinction ratio of over 25 dB at the resonant wavelength and a narrowed 3-dB bandwidth of only 8.7 nm, which is nearly one order of magnitude smaller than that of LPFGs in conventional single-mode fibers. It also exhibits a high polarization-dependent loss of over 20 dB at resonant wavelength. The temperature… CONTINUE READING


Publications referenced by this paper.
Showing 1-10 of 21 references

Highly reflective long period fiber grating sensor and its application in refractive index sensing

  • L. Qi
  • Sens. Actuators B-Chem., vol. 193, pp. 185–189…
  • 2014
1 Excerpt

Similar Papers

Loading similar papers…