亚波长直径光纤的光学传输特性及其应用

Subwavelength-diameter optical fibers: waveguiding properties and photonic applications

通过高温下的物理拉伸方法,可以直接将玻璃材料拉细成亚波长或纳米直径的光纤。所获得的光纤具有很好的直径均匀度和表面光滑度,可用于低损耗光传输,并可在可见和近红外光学传输中表现出强光场约束、倏逝波传输和大波导色散等特性,在光通信、传感和非线性光学等领域具有良好的应用前景。

By means of high-temperature physical drawing, glasses can be directly drawn into subwavelength-or nanometer-diameter fibers. As-fabricated nanofibers show excellent diameter uniformity and surface smoothness for low-loss optical wave guiding, and may exhibit a series of interesting properties such as tight optical confinement, evanescent guidance and high waveguide dispersion. These fibers provide promising building blocks for photonic applications in optical communications,