Nonlinear optical properties of polycrystalline silicon core fibers from telecom wavelengths into the mid-infrared spectral region
Nonlinear optical properties of polycrystalline silicon core fibers from telecom wavelengths into the mid-infrared spectral region
复制标题
多晶硅芯光纤从电信波长到中红外光谱区的非线性光学特性
DOI：
10.1364/ome.9.001271
复制
发表时间：
2019-03-01
影响因子：
2.8
通讯作者：
Peacock, A. C.
中科院分区：
文献类型：
--
作者：
Ren, H.;Shen, L.;Peacock, A. C.
采用熔融拉芯法（MCD）制备的多晶硅芯光纤（SCF）是一种新型的柔性光电平台。在这里，已逐渐减小到几微米大小的核心尺寸的MCD SCF的光传输特性的特征在于从电信频带到中红外光谱区。SCF在整个波长范围内表现出几dB/cm量级的低线性损耗。SCF的双光子吸收系数（β（TPA））和非线性折射率（n（2））的表征揭示了与单晶硅材料的先前测量一致的值，表明多晶硅芯材料的高光学质量。高非线性系数的优点，为2 μ m以上的波长得到突出的潜力，这些光纤找到应用于红外非线性光子学。由The Optical Society根据Creative Commons Attribution 4.0 License条款发布。
Polycrystalline silicon core fibers (SCFs) fabricated via the molten core drawing (MCD) method are emerging as a flexible optoelectronic platform. Here, the optical transmission properties of MCD SCFs that have been tapered down to a few micrometer-sized core dimensions are characterized from the telecom band to the mid-infrared spectal regime. The SCFs exhibit low linear losses on the order of a few dB/cm over the entire wavelength range. Characterization of the two-photon absorption coefficient (beta(TPA)) and nonlinear refractive index (n(2)) of the SCFs reveals values consistent with previous measurements of single crystal silicon materials, indicating the high optical quality of the polysilicon core material. The high nonlinear figure of merit obtained for wavelengths above 2 mu m highlight the potential for these fibers to find application in infrared nonlinear photonics. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.