Fano Resonances in Thin Metallic Grating for Refractive Index Sensing with High Figure of Merit

Plasmonics ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 139-149 ◽  
Author(s):  
Lixia Li ◽  
Yuzhang Liang ◽  
Mengdi Lu ◽  
Wei Peng
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Fano Resonances ◽  
Metallic Grating ◽  
Refractive Index Sensing ◽  
High Figure

scholarly journals Nanoslotted microring resonator for high figure of merit refractive index sensing

2020 ◽  
Vol 50 (1) ◽  
Author(s):  
Daquan Yang ◽  
Bing Duan ◽  
Xuan Zhang ◽  
Hui Lu
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Fdtd Method ◽  
Three Dimensional ◽  
Microring Resonator ◽  
Strong Light ◽  
Refractive Index Sensing ◽  
Biochemical Sensing ◽  
Light Matter Interaction ◽  
High Figure

A nanoslotted microring resonator (NSMR) with enhanced light-matter interaction has been designed, which can be used for high sensitive refractive index sensing. The performance of the device is investigated theoretically based on a three-dimensional finite-difference time-domain (3D-FDTD) method. In order to achieve high figure of merit sensing, the nanoslot geometry is exploited to make the optical field strongly localized inside the low index region and overlap sufficiently with the analytes. By using the 3D-FDTD method, the proposed NSMR sensor device achieves a high Q-factor (Q > 105) and sensitivity ~100 nm/RIU (RIU – refractive index unit). Moreover, the strong light confinement introduced by the nanoslot in NSMR results in the sensor figure of merit as high as 6.73 × 103. Thus, the design we proposed is a promising platform for refractive index-based biochemical sensing and lab-on-a-chip applications.

scholarly journals Refractive index sensing with Fano resonances in silicon oligomers

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160070 ◽  
Author(s):  
Katie E. Chong ◽  
Henry W. Orton ◽  
Isabelle Staude ◽  
Manuel Decker ◽  
Andrey E. Miroshnichenko ◽  
...  
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Spectral Features ◽  
Fano Resonances ◽  
Refractive Index Sensitivity ◽  
New Horizons ◽  
Refractive Index Sensing ◽  
Index Sensitivity

We demonstrate experimentally refractive index sensing with localized Fano resonances in silicon oligomers, consisting of six disks surrounding a central one of slightly different diameter. Owing to the low absorption and narrow Fano-resonant spectral features appearing as a result of the interference of the modes of the outer and the central disks, we demonstrate refractive index sensitivity of more than 150 nm RIU −1 with a figure of merit of 3.8. This article is part of the themed issue ‘New horizons for nanophotonics’.

Extremely high figure of merit in all-dielectric split asymmetric arc metasurface for refractive index sensing

2020 ◽  
Vol 462 ◽  
pp. 125327 ◽  
Author(s):  
Keshav Samrat Modi ◽  
Jasleen Kaur ◽  
Satya Pratap Singh ◽  
Umesh Tiwari ◽  
Ravindra Kumar Sinha
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Refractive Index Sensing ◽  
High Figure

High figure of merit refractive index nanosensor based on Fano resonances in waveguide

2020 ◽  
Vol 14 (02) ◽  
pp. 1
Author(s):  
Yusen Wang ◽  
Shilin Yu ◽  
Tonggang Zhao ◽  
Zonghai Hu ◽  
Shuo Wang
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Fano Resonances ◽  
High Figure
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