Abstract
Tilted fiber Bragg grating (TFBG) and reflective tilted fiber Bragg grating (R-TFBG) were proposed and demonstrated in the graded-index multimode fiber (GI-MMF). The TFBGs with grating planes tilted at an angle of 2.5° corresponding to the fiber axis were inscribed. The TFBGs in the GI-MMF had the good linear sensitivity to the temperature, strain and curvature. The fiber was then cleaved at the far end of the TFBG to form an R-TFBG using the Fresnel reflection of the fiber end. The reflective spectra of the R-TFBG were given, and the temperature sensing properties were also investigated.
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Li, D., Gong, Y. & Wu, Y. Tilted fiber Bragg grating in graded-index multimode fiber and its sensing characteristics. Photonic Sens 3, 112–117 (2013). https://doi.org/10.1007/s13320-013-0107-6
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DOI: https://doi.org/10.1007/s13320-013-0107-6