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提出了一种可以传输16个轨道角动量模式的光纤,采用纤芯和环之间高掺杂（▽n=0.256）的缓变折射率环形光纤结构。通过有限元分析法进行仿真分析,结果表明,该光纤可以将简并模之间的有效折射率差提高到6.656×10-3,减小了模式之间的耦合。同时,由于光纤折射率的缓慢变化,理论上模式纯度可达到100%,从而能够有效地减小模间串扰。

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报道并探讨1例分裂情感性障碍致扩大性自杀病例,以提高对该病的诊治及自杀风险的认识。 国内外鲜有对分裂性情感障碍致扩大性自杀的相关文献报道,希望通过对该例的报道引起临床医师的注意。 [ABSTRACT FROM AUTHOR]

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