title: Mode splitting in high-index-contrast grating with mini-scale finite size.
abstract: The mode-splitting phenomenon within finite-size, mini-scale high-index-contrast gratings (HCGs) has been investigated theoretically and experimentally. The high-Q resonance splits into a series of in-plane modes due to the confinement of boundaries but can still survive even on a mini-scale footprint. Q factors up to ∼3300 and ∼2200 have been observed for the HCGs with footprints that are only 55  μm×300  μm and 27.5  μm×300  μm, which would be promising for realizing optical communication and sensing applications with compact footprint.
authors: Zhixin
authors: Z
authors: Wang
authors: Liangfu
authors: L
authors: Ni
authors: Haiyang
authors: H
authors: Zhang
authors: Hanxing
authors: H
authors: Zhang
authors: Jicheng
authors: J
authors: Jin
authors: Chao
authors: C
authors: Peng
authors: Weiwei
authors: W
authors: Hu