Broad working bandwidth and "endlessly" single-mode guidance within hybrid silicon photonics.
Broad working bandwidth and "endlessly" single-mode guidance within hybrid silicon photonics.
复制标题
混合硅光子学中的宽工作带宽和“无限”单模引导。
作者：
K. Bougot;J. Hugonin;M. Besbes;H. Benisty
非线性光子学和混合硅光子学的成功以及功能材料种类的不断增加需要不断扩大的带宽。参数梳频率生成就是最好的例证。由于短波长高阶模式的不利出现，这种操作对作为引导基础的介质通道波导提出了挑战。令人惊讶的是，流行的无休止单模制导机制[选项。 Lett.22, 961 (1997).] 在光子晶体光纤中的操作尚未转移到硅光子学中。我们在此概述了这种方法在平面和混合硅光子学中的策略和潜力，其中面内和垂直限制被证明适合典型硅带中的近单模行为，即 λ=1.1 μm 至 ∼5 μm。
The successes of nonlinear photonics and hybrid silicon photonics with a growing variety of functional materials entail ever-enlarging bandwidths. It is best exemplified by parametric comb frequency generation. Such operation challenges the dielectric channel waveguide as the basis for guidance, because of the adverse advent of higher order modes at short wavelengths. Surprisingly, the popular mechanism of endlessly single-mode guidance [Opt. Lett.22, 961 (1997).] operating in photonic crystal fibers has not been transposed within silicon photonics yet. We outline here the strategy and potential of this approach within planar and hybrid silicon photonics, whereby in-plane and vertical confinement are shown to be amenable to near-single-mode behavior in the typical silicon band, i.e., λ=1.1 μm to ∼5 μm.