光子集成电路
光子学
波导管
光子
光电子学
材料科学
铌酸锂
慢光
光子晶体
光致发光
时域有限差分法
联轴节(管道)
光学
物理
冶金
作者
Xiaojing Liu,Yue Yu,Di Liu,Qilong Cui,Xiao-Zhuo Qi,Yang Chen,Gui‐Rong Qu,Song Li,Guo-Ping Guo,Guang‐Can Guo,Xiankai Sun,Xi-Feng Ren
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-04-11
卷期号:23 (8): 3209-3216
被引量:6
标识
DOI:10.1021/acs.nanolett.2c05034
摘要
On-chip light sources are an essential component of scalable photonic integrated circuits (PICs), and coupling between light sources and waveguides has attracted a great deal of attention. Photonic waveguides based on bound states in the continuum (BICs) allow optical confinement in a low-refractive-index waveguide on a high-refractive-index substrate and thus can be employed for constructing PICs. In this work, we experimentally demonstrated that the photoluminescence (PL) from a monolayer of tungsten sulfide (WS2) could be coupled into a BIC waveguide on a lithium-niobate-on-insulator (LNOI) substrate. Using finite-difference time-domain simulations, we numerically obtained a coupling efficiency of ∼2.3% for an in-plane-oriented dipole and a near-zero loss at a wavelength of 620 nm. By breaking through the limits of 2D-material integration with conventional photonic architectures, our work offers a new perspective for light–matter coupling in monolithic PICs.
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