Graphene-coated tilted fiber-Bragg grating for enhanced sensing in low-refractive-index region

Biqiang Jiang, Xin Lu, Xuetao Gan, Mei Qi, Yadong Wang, Lei Han, Dong Mao, Wending Zhang, Zhaoyu Ren, Jianlin Zhao

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62 引用 (Scopus)

摘要

We propose and experimentally demonstrate a method to significantly extend the sensitive window of tilted fiber-Bragg grating (TFBG) into low-refractive-index region with the integration of graphene coating. The coupling between cladding modes of TFBG and graphene coating results in an obvious modification of the cladding-mode envelope, which provides a sensitive regime relying on graphene's complex refractive index. Interacting the graphene-coated TFBG with various aqueous solutions, we observe strongly enhanced sensitivity in the low-refractive-index region of 1-1.428, which is about 10-fold extended from that of the unloaded TFBG. The graphene-coated TFBGs present great potentials in the biochemical sensing window.

源语言英语
页(从-至)3994-3997
页数4
期刊Optics Letters
40
17
DOI
出版状态已出版 - 2015

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