Supercontinuum Generation in Silicon Optical Fibers

硅光纤是近中红外（1.3 - 4.5纳秒）超连续光谱（SC）产生的一个有前途的平台，可用于传感和光谱。本项目旨在建立一个精确的数值模型，考虑到关键参数的波长依赖性，包括多光子吸收和自由载流子吸收，以便更好地理解连续统产生的动力学。然后，这将用于优化这些纤维，包括设计锥形型材（沿长度有直径变化），可以产生比以前实现的更宽的SC，并且尽可能低的功率。

Silicon optical fibers are a promising platform for supercontinuum (SC) generation in the near-to-mid infrared (1.3 - 4.5nanoseconds) to be used for sensing and spectroscopy. This project aims to develop an accurate numerical model that takes into account the wavelength dependence of the key parameters, including multi-photon absorption and free-carrier absorption, in order to better understand the dynamics of the continuum generation. This will then be used for the optimisation of these fibers, including the design of tapered profiles (which have a variation of diameter along the length) that can produce a wider SC than previously achieved, and at the lowest possible powers.