光学
慢光
功率分配器和定向耦合器
光子学
联轴节(管道)
光子集成电路
光子晶体
折射率
光电子学
厚板
波导管
物理
电子线路
材料科学
量子力学
地球物理学
冶金
作者
Hironobu Yoshimi,Takuto Yamaguchi,Shintaro Ishida,Yasutomo Ota,Satoshi Iwamoto
出处
期刊:Optics Express
[The Optical Society]
日期:2024-02-07
卷期号:32 (4): 6382-6382
摘要
We numerically and experimentally demonstrate efficient light couplers between topological slow light waveguides in valley photonic crystals (VPhCs) and wire waveguides. By numerical simulations, we obtained a high coupling efficiency of -0.84 dB/coupler on average in the slow light regime of a group index ng = 10 - 30. Experimentally, we fabricated the couplers in a Si slab and measured the transmitted power of the devices. We realized a high coupling efficiency of approximately -1.2 dB/coupler in the slow light region of ng = 10 - 30, which is close to the result from the numerical simulations. These demonstrations will lay the groundwork for low-loss photonic integrated circuits using topological slow light waveguides.
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