采用无间隙耦合微盘谐振器的多元素耦合谐振器光波导。

Many-element coupled-resonator optical waveguides using gapless-coupled microdisk resonators.

作者信息

Luo Xianshu, Poon Andrew W

机构信息

Photonic Device Laboratory, Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China.

出版信息

Opt Express. 2009 Dec 21;17(26):23617-28. doi: 10.1364/OE.17.023617.

DOI:10.1364/OE.17.023617

PMID:20052071

Abstract

We report silicon photonic many-element coupled-resonator optical waveguides (CROWs) using microspiral and double-notch-shaped microdisk resonators. Such microresonators enable gapless inter-cavity coupling via seamlessly jointed sub-micrometer-sized notches. Our experiments reveal CROW transmission spectra using up to 101 gaplessly coupled microdisk resonators. We estimate from the transmission measurements an insertion loss of approximately 0.11-approximately 0.24 dB/disk within the transmission bands. We show high-order filtering performance with maximum 3-dB linewidth of approximately 2.5 nm and measurement-limited side-mode suppression ratio of approximately 30 dB. The demonstrated maximum optical delay from a 101-element 0.4-microm-notch CROW is approximately 70 ps at the transmission band center and approximately 110 ps at the sideband.

摘要

我们报道了使用微螺旋和双凹口形微盘谐振器的硅光子多元素耦合谐振器光波导（CROW）。这种微谐振器能够通过无缝连接的亚微米尺寸凹口实现无间隙的腔间耦合。我们的实验揭示了使用多达101个无间隙耦合微盘谐振器的CROW传输光谱。我们从传输测量中估计，在传输带内每个盘的插入损耗约为0.11 - 约0.24 dB。我们展示了高阶滤波性能，最大3 dB线宽约为2.5 nm，测量限制的边模抑制比约为30 dB。在101元素、0.4微米凹口的CROW中，在传输带中心展示的最大光学延迟约为70 ps，在边带约为110 ps。