Fano resonances in ultracompact waveguide Fabry-Perot resonator side-coupled lossy nanobeam cavities

We propose and demonstrate experimentally an ultracompact resonant system exhibiting sharp asymmetric Fano-resonance, in which a tiny photonic crystal nanobeam cavity is laterally coupled to a waveguide Fabry-Perot resonator. Under the presence of cavity intrinsic loss, we find that the system produ...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2013-08, Vol.103 (9)
Main Authors: Yu, Ping, Hu, Ting, Qiu, Huiye, Ge, Fangfang, Yu, Hui, Jiang, Xiaoqing, Yang, Jianyi
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose and demonstrate experimentally an ultracompact resonant system exhibiting sharp asymmetric Fano-resonance, in which a tiny photonic crystal nanobeam cavity is laterally coupled to a waveguide Fabry-Perot resonator. Under the presence of cavity intrinsic loss, we find that the system produces sharper and higher extinction ratio Fano resonance spectra only if appropriate phase is selected. The whole device (∼6 μm2) is implemented on silicon on insulator platform, and experimentally we observe steep-slope Fano resonance with extinction ratio of 7.3 dB, slope above 5 dB/nm, and average insertion loss less than 1.8 dB.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4819741