The dispersion of optical fiber can damage optical information, thus limiting data transfer speed and transmission distances. In this paper, a new structure is presented by applying metal nanoparticles for photonic crystal fibers (PCF) so that minimizes dispersion and optical loss. The proposed PCF uses circular and elliptical shape nanoparticles, then their number and location is optimized by PSO algorithm. Applying metal nanoparticles in PCF substrate causes increases the conductivity and increases light excitation, which increases light absorption and decreasing dispersion. By changing the shape, location, and type of nanoparticles, a structure with minimal dispersion and light loss is provided. In this paper, we applied three elliptical and three circular nanoparticles using the PSO results. The hexagonal PCF is designed with air grids and radius of 5.8 µm, and then circular and elliptical gold particles are used instead of air holes. Simulation results show that the loss is 7e−4 dB/cm at wavelengths between 1.3 and 1.65 µm and the dispersion is obtained less than 0.3 ps/nm/km. The light loss and dispersion are reduced compared to other related studies.

中文翻译：

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使用纳米粒子优化减少光子晶体光纤中的色散和光损失

光纤的色散会破坏光信息，从而限制数据传输速度和传输距离。在本文中，通过将金属纳米粒子应用于光子晶体光纤 (PCF) 来提出一种新结构，以最大限度地减少色散和光损耗。所提出的 PCF 使用圆形和椭圆形纳米粒子，然后通过 PSO 算法优化它们的数量和位置。在 PCF 基板中应用金属纳米粒子会增加电导率并增加光激发，从而增加光吸收并减少色散。通过改变纳米颗粒的形状、位置和类型，提供了具有最小色散和光损失的结构。在本文中，我们使用 PSO 结果应用了三个椭圆形和三个圆形纳米粒子。六角形PCF设计有空气网格，半径为5.8 µm，然后使用圆形和椭圆形金颗粒代替空气孔。仿真结果表明，波长在 1.3 到 1.65 µm 之间的损耗为 7e-4 dB/cm，色散小于 0.3 ps/nm/km。与其他相关研究相比，光损失和色散减少。