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以光子晶体光纤环为研究对象,利用白光干涉仪测试了不同温度下保偏光子晶体光纤环和普通保偏光纤环内部的偏振交叉耦合强度分布,分析了光纤环中固定耦合点不同温度下的偏振耦合强度变化。结果表明,在-40℃~50℃的温度条件下,保偏光子晶体光纤环偏振耦合强度最大变化率为0.97%;普通保偏光纤环偏振耦合强度的变化率为4.71%,约为保偏光子晶体光纤环的5倍。实验研究证明,光子晶体光纤环的偏振交叉耦合强度温度稳定性高于普通保偏光纤环的偏振交叉耦合强度的温度稳定性。
Taking the photonic crystal fiber ring as the research object, the polarization cross-coupling intensity distribution of the polarization-maintaining photonic crystal fiber ring and ordinary polarization-maintaining fiber ring at different temperatures was tested by using a white light interferometer. The effects of temperature, Polarization Coupling strength changes. The results show that the maximum change rate of the polarization coupling strength of the polarization-maintaining photonic crystal fiber ring is 0.97% at the temperature of -40 ℃ ~ 50 ℃. The change rate of the polarization coupling strength of the conventional polarization maintaining fiber ring is 4.71% Sub-crystal fiber ring 5 times. Experimental studies have shown that the temperature stability of the polarization cross-coupling strength of the photonic crystal fiber ring is higher than the polarization cross-coupling strength of the ordinary polarization maintaining fiber ring.