多功能高分子修饰PbS量子点光纤放大器
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上海大学特种光纤与光接入网重点实验室上海200072

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TN253

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Multifunctional copolymermodified PbS quantum dot optical fiber amplifier
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The Key Lab of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China

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    摘要:

    创新性地合成了一种新型多功能高分子用于改变PbS量子点表面的配体极性。利用高分子末端的羧基与PbS量子点之间较强的络合作用,通过配体交换替换PbS量子点表面原有的油胺配体。通过这种方法修饰PbS量子点步骤简便,而且很好的保持了PbS量子点的荧光效率。经过配体交换以后的PbS量子点可以转移至极性溶剂中,提高了PbS量子点在极性溶剂中稳定性,并利用生长法将配体交换后的PbS量子点生长于锥形单模光纤耦合器表面,制成光纤放大器。随后,研究了高分子中氟成分对于信号增益的影响,结果表明随着高分子中氟含量的增加,信号增益越大,证明这种高分子修饰的量子点在光纤放大器方面会有更好的应用前景。

    Abstract:

    We innovatively synthesize multifunctional copolymers to change the surface polarity of PbS quantum dots. The original oleylamine ligands are replaced by carboxyl terminus, as carboxylcontaining ligands have stronger binding affinity towards the PbS quantum dots surface than aminebased ligands. After ligand exchange, PbS quantum dots are transferred from nonpolar solvent to polar solvent. The new mothod could keep the fluorescence efficiency and stability of PbS quantum dots in polar solvent better. Alcoholic solution of PbS quantum dots are coated on the surface of the tapered singlemode fiber by grow method to make fiber amplifier. Since fluorinecontaining polymers can affect the gain characteristics of the optical fiber amplifier, we study the influence of polymers with different fluorine content on the signal gain. The result shows that the signal gain are higher with increasing the fluorine content of the polymer.

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陈磊.多功能高分子修饰PbS量子点光纤放大器[J].电子测量技术,2016,39(9):141-144

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  • 在线发布日期: 2016-10-17
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