论文标题
片上布里鲁因缺口过滤器上的硝酸硅环谐振器
On-chip Brillouin notch filter on a silicon nitride ring resonator
论文作者
论文摘要
非连接布里鲁因光谱是一种纯粹的光学和无标签方法，可检索基本材料粘弹性。最近，对三维成像方式的延伸为生物医学领域的新型激动人心的机会铺平了道路，但是由于占主导地位的弹性背景光通常使无抗弹性的布里素峰淹没，对布里鲁因谱的发现仍然具有挑战性。在这封信中，我们基于在硝化硅平台上制造的光学环谐振器，展示了完全集成的超紧凑型布里渊置过滤器。测量我们的芯片环谐振器滤光片的灭绝比为10 dB，Q系数为1.9x10^5。实验结果提供了概念验证，以证明片上过滤器减弱弹性背景光的能力，预示着完全集成，超紧凑和低成本的布里群素光谱仪的未来发展。
Noncontact Brillouin spectroscopy is a purely optical and label-free method to retrieve fundamental material viscoelastic properties. Recently, the extension to a three-dimensional imaging modality has paved the way to novel exciting opportunities in the biomedical field, yet the detection of the Brillouin spectrum remains challenging as a consequence of the dominant elastic background light that typically overwhelms the inelastic Brillouin peaks. In this Letter, we demonstrate a fully integrated and ultra-compact Brillouin notch filter based on an optical ring resonator fabricated on a silicon nitride platform. Our on-chip ring resonator filter was measured to have a 10 dB extinction ratio and a Q factor of 1.9x10^5. The experimental results provide a proof-of-concept on the ability of the on-chip filter to attenuate the elastic background light, heralding future developments of fully integrated, ultra-compact and low-cost Brillouin spectrometers.
