Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.392677
Title: Demonstration of mid-infrared slow light one-dimensional photonic crystal ring resonator with high-order photonic bandgap
Authors: Sun, Fujun
Dong, Bowei 
Wei, Jingxuan 
Ma, Yiming 
Tian, Huiping
Lee, Chengkuo 
Keywords: Science & Technology
Physical Sciences
Optics
WAVE-GUIDES
SILICON PHOTONICS
DISPERSION
SAPPHIRE
ABSORPTION
DESIGN
SENSOR
Issue Date: 12-Oct-2020
Publisher: OPTICAL SOC AMER
Citation: Sun, Fujun, Dong, Bowei, Wei, Jingxuan, Ma, Yiming, Tian, Huiping, Lee, Chengkuo (2020-10-12). Demonstration of mid-infrared slow light one-dimensional photonic crystal ring resonator with high-order photonic bandgap. OPTICS EXPRESS 28 (21) : 30736-30747. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.392677
Abstract: Integrated mid-infrared sensing offers opportunities for the compact, selective, label-free and non-invasive detection of the absorption fingerprints of many chemical compounds, which is of great scientific and technological importance. To achieve high sensitivity, the key is to boost the interaction between light and analytes. So far, approaches like leveraging the slow light effect, increasing optical path length and enhancing the electric field confinement (f) in the analyte are envisaged. Here, we experimentally investigate a slow light one-dimensional photonic crystal ring resonator operating at high-order photonic bandgap (PBG) in mid-infrared range, which features both strong field confinement in analyte and slow light effect. And the optical path length can also be improved by the resoantor compared with waveguide structure. The characteristics of the first- and second-order bandgap edges are studied by changing the number of patterned periodical holes while keeping other parameters unchanged to confine the bands in the measurement range of our setup between 3.64 and 4.0 µm. Temperature sensitivity of different modes is also experimentally studied, which helps to understand the field confinement. Compared to the fundamental PBG edge modes, the second PBG edge modes show a higher field confinement in the analyte and a comparable group index, leading to larger light-matter interaction. Our work could be used for the design of ultra-sensitive integrated mid-infrared sensors, which have widespread applications including environment monitoring, biosensing and chemical analysis.
Source Title: OPTICS EXPRESS
URI: https://scholarbank.nus.edu.sg/handle/10635/189820
ISSN: 10944087
DOI: 10.1364/OE.392677
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Demonstration of mid-infrared slow light one-dimensional photonic crystal ring resonator with high-order photonic bandgap.pdfAccepted version2.53 MBAdobe PDF

OPEN

PublishedView/Download

SCOPUSTM   
Citations

1
checked on May 5, 2021

Page view(s)

20
checked on May 6, 2021

Download(s)

2
checked on May 6, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.