Design and optimization of microstructure optical fiber sensor based on bimetal plasmon mode interaction<xref rid="cpb_28_12_124202fn1" ref-type="fn">*</xref><fn id="cpb_28_12_124202fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61575066, 61527822, and 61735005), the Natural Science Foundation of Guangdong Province, China (Grant No. 2017A030313333), the Science and Technology Program of Guangzhou City, China (Grant No. 201707010133), the Science and Technology Planning Project of Guangdong Province, China (Grant No. 2017KZ010201), the GDUPS (2017), the Innovation Project of Graduate School of South China Normal University (Grant No. 2018LKXM040), and the SCNU Study Abroad Program for Elite Postgraduate Students, China.</p></fn>

Design and optimization of microstructure optical fiber sensor based on bimetal plasmon mode interaction**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61575066, 61527822, and 61735005), the Natural Science Foundation of Guangdong Province, China (Grant No. 2017A030313333), the Science and Technology Program of Guangzhou City, China (Grant No. 201707010133), the Science and Technology Planning Project of Guangdong Province, China (Grant No. 2017KZ010201), the GDUPS (2017), the Innovation Project of Graduate School of South China Normal University (Grant No. 2018LKXM040), and the SCNU Study Abroad Program for Elite Postgraduate Students, China.

Wu Meng^{1, 2, 3}, Liu Xin-Yu^{1, 2, 3}, Zhou Gui-Yao^{1, 2, 3}, Xia Chang-Ming^{1, 2, 3}, Li Bo-Yao^{1, 2, 3}, Hou Zhi-Yun^{1, 2, 3, †}

(a) Linear and (b) nonlinear fitting of loss versus refractive index in a range from 1.37 to 1.4.