随着制备工艺的不断进步和对光电子器件快反应速度、高灵敏度和低功耗等的需求增加，制备和研究亚波长量级(<1μm)芯径的光子晶体光纤(SCPCF)对纳米尺寸光电子器件的研制与集成化具有至关重要的意义。 本课题拟采用纳米领域的新原理和新技术，建立制备SCPCF的动力学模型，表征相关的工艺理论,解决不同结构SCPCF直接拉制工艺的可预知性；考虑SCPCF中光场增强机制和模式的旋转非对称性，结合量子与边界效应，修正传统的非线性薛定谔方程(NLSE)，建立能够准确分析短脉冲在SCPCF中传输时所呈现的非线性新现象和新机理的理论模型；优化设计和制备SCPCF，实验研究短脉冲在SCPCF中的传输动态，实现几何光学非线性对近红外波段拉曼孤子自频移效应的显著抑制；将不同功率和工作波长的泵浦脉冲耦合进SCPCF的芯区中，实现几何光学非线性对紫外至可见光波段产生的新频谱的有效促进，获得波长可调节的超短脉冲源。

With the progress of fabrication technology and the increasing requirement of photoelectron devices on the fast response time, high sensitivity, and low power depletion, it has a crucial meaning on the development and integration of nanometer photoelectron devices to fabricate and study on the subwavelength core photonic crystal fiber(SCPCF). Here, with the new principle and technology in the nanometer field, the dynamic model in the process of fabrication on SCPCFs will be established, and the related theory is studied to solve the foresee of the arts and crafts when the SCPCFs with different structures are directly drawn. And the enhancement mechanism of light field and the rotary non-symmetry of modes are taken into account, and the conventional nonlinear Schr?dinger equation(NLSE) is modified by combining the quantum and boundary effects to establish the exact theory model for analyzing the new nonlinearity phenomenon and mechanism when the short pulses are propagated in the SCPCF. Moreover, the SCPCFs with the optimal structures are fabricated,and the propagation dynamics of short pulses in the SCPCF are experimentally studied to achieve the remarkable depression of geometrical optical nonlinearity on the Raman soliton self-frequency shift effect at the near-infrared wavelengths. Finally, the pump pulses with different powers and working wavelengths are coupled into the core region of SCPCF so as to achieve the effective promotion of geometrical optical nonlinearity on the new frequency spectra generated in the range of the ultraviolet to visible wavelengths, and the wavelength-tunable ultrashort pulse sources are obtained.