论文标题
通过微孔谐振器中的嵌入式相变材料启用了电气重新配置的硅光子滤波器
Electrically reconfigurable silicon photonic filter enabled by embedded phase change material in microring resonator
论文作者
论文摘要
我们报告了一个基于相变材料的可调光滤波器$ ge_ {2} sb_ {2} te_ {5} $嵌入在硅微孔谐振器中。 $ ge_ {2} sb_ {2} te_ {5} $的高热光系数在无定形相中可以在较大的范围内调整共振波长，并具有很小的活动量。低损失的二键锡氧化物电极用于在$ ge_ {2} sb_ {2} te_ {5} $ -SI Active WaveGuide区域中诱导焦耳加热。活性区域的电诱导加热改变了杂化微林的有效折射率，导致波长调谐为1.04 nm，仅施加的电压仅为3V。该设备仅在20-41 dB的范围内表现出较高的灭绝比和仅紧凑的活动足迹0.96 $μm^{2} $，并且适用于大型可重新配置的集成光子电路。
We report a tunable optical filter based on phase change material $Ge_{2}Sb_{2}Te_{5}$ embedded in a silicon microring resonator. The high thermo-optic coefficient of $Ge_{2}Sb_{2}Te_{5}$ in amorphous phase enables tuning of resonance wavelength in broad range with a very small active volume. The low-loss indium-tin-oxide electrodes are employed to induce Joule heating in $Ge_{2}Sb_{2}Te_{5}$-Si active waveguide region. The electrically induced heating in the active region alters the effective refractive index of hybrid microring resulting in a wavelength tuning of 1.04 nm for an applied voltage of only 3V. The device exhibits high extinction ratios in the range of 20-41 dB and a compact active footprint 0.96 $μm^{2}$ only and is suitable for the large scale reconfigurable integrated photonic circuits.
