Design of diamond-shape photonic crystal fiber polarization filter based on surface plasma resonance effect<xref rid="cpb_29_3_034208fn1" ref-type="fn">*</xref><fn id="cpb_29_3_034208fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61875238 and 61935007).</p></fn>

Design of diamond-shape photonic crystal fiber polarization filter based on surface plasma resonance effect**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61875238 and 61935007).

Zhang Yongxia¹, Yuan Jinhui^{1, 2, †}, Qu Yuwei², Zhou Xian¹, Yan Binbin², Wu Qiang³, Wang Kuiru², Sang Xinzhu², Long Keping¹, Yu Chongxiu²

(a) The confinement losses of the x-polarized and y-polarized core modes and the real part of the effective refractive indices of the x-polarized core mode and 2nd-order SPP mode. (b) The variations of ER with different L.