Surface plasmon resonance-induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers<xref rid="cpb_26_10_104211_fn1" ref-type="fn">*</xref><fn id="cpb_26_10_104211_fn1"><label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61505175 and 61475134) and the Natural Science Foundation of Hebei Province, China (Grant Nos. F2017203110 and F2017203193).</p> </fn>

Surface plasmon resonance-induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61505175 and 61475134) and the Natural Science Foundation of Hebei Province, China (Grant Nos. F2017203110 and F2017203193).

Liu Yingchao, Chen Hailiang^†, Li Shuguang, Liu Qiang, Li Jianshe

(color online) (a) Confinement loss dependence on the wavelength when the liquid index is 1.344, 1.387, respectively, (b) when liquid index is 1.344 and 1.387 the corresponding ER dependence on the operable wavelength λ. The structural parameters are d₁ = 2.6 μm, d₂ = 2.4 μm, d₃ = 1.2 μm, d = 1.2 μm, t = 30 nm, and Λ = 2 μm. We realize the tunable polarization filter simply by adjusting the liquid index.