论文标题
石墨烯氧化石墨烯涂层的集成光波导的光热调节
Photo-thermal tuning of graphene oxide coated integrated optical waveguides
论文作者
论文摘要
我们实验研究了覆盖在集成的光学波导上的二维（2D）氧化石墨烯（GO）膜的功率敏感光热音调（PTT）。我们测量了与1和2层GO集成的氮化硅（SIN）波导中可逆和永久性降低的光功率阈值。具有永久减少GO的混合波导的不同位置的拉曼光谱被表征，从而验证了沿着波导的光传播方向的不均匀GO还原。还比较了连续波激光器引起的PTT与脉冲激光器诱导的PTT之间的差异，这证实了PTT主要取决于平均输入功率。这些结果揭示了涂在集成的光学波导上的2D GO膜的有趣特征，这对于在混合集成光子设备中控制和工程的控制和工程至关重要。
We experimentally investigate power sensitive photothermal tuning (PTT) of two dimensional (2D) graphene oxide (GO) films coated on integrated optical waveguides. We measure the light power thresholds for reversible and permanent GO reduction in silicon nitride (SiN) waveguides integrated with 1 and 2 layers of GO. Raman spectra at different positions of a hybrid waveguide with permanently reduced GO are characterized, verifying the inhomogeneous GO reduction along the direction of light propagation through the waveguide. The differences between the PTT induced by a continuous wave laser and a pulsed laser are also compared, confirming that the PTT mainly depend on the average input power. These results reveal interesting features for 2D GO films coated on integrated optical waveguides, which are of fundamental importance for the control and engineering of GO properties in hybrid integrated photonic devices.
