FDTD Simulation: Refractive Index and Single-Object Sensing Using a Whispering-Gallery-Modes Microring Resonator

2018 ◽  
Vol 36 (9) ◽  
pp. 1775-1781 ◽  
Author(s):  
Zhi-Hong Zhang ◽  
Si-Hui Shang ◽  
Mu-Neng Li ◽  
Shao-Yi Wu ◽  
Qin-Sheng Zhu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Microring Resonator ◽  
Whispering Gallery Modes ◽  
Fdtd Simulation ◽  
Single Object ◽  
Whispering Gallery

scholarly journals FDTD Simulation: Simultaneous Measurement of the Refractive Index and the Pressure Using Microdisk Resonator with Two Whispering-Gallery Modes

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3955
Author(s):  
Ping Zhang ◽  
Dongyue He ◽  
Chen Zhang ◽  
Zhiruo Yan
Keyword(s):  
Refractive Index ◽  
Second Order ◽  
Whispering Gallery Modes ◽  
Fdtd Simulation ◽  
Pressure Sensitivity ◽  
Sensitivity Matrix ◽  
Whispering Gallery ◽  
Sensing Applications ◽  
Novel Approach ◽  
Microdisk Resonator

In this paper, an approach to measure both the refractive index (RI) and the pressure simultaneously using two Whispering-Gallery Modes (WGMs) in a microdisk resonator is theoretically proposed. Due to the difference in the energy distribution of the first and second order WGMs, the sensitivity of two modes toward the variation of RI and pressure applied to the device show differences. An RI sensitivity of 29.07 nm/RIU and pressure sensitivity of 0.576 pm/kPa for WGM (1,36), and an RI sensitivity of 38.68 nm/RIU and a pressure sensitivity of 0.589 pm/kPa for WGM (2,28) are obtained through the 3D finite-difference time-domain (3D-FDTD) simulation. Dual parametric sensing can be achieved by solving the second-order inverse sensitivity matrix. Therefore, strain–optical coupling behavior is effectively eliminated. The dual sensing scheme we proposed provides a novel approach to overcome the difficulty of multi-sensing applications based on the flexible photonic device.

scholarly journals Numerical simulation of optical coupling between a microring resonator and a directly connected straight waveguide

2021 ◽  
Vol 2086 (1) ◽  
pp. 012162
Author(s):  
V V Pirogov ◽  
S A Scherbak ◽  
A A Lipovskii ◽  
N V Kryzhanovskaya ◽  
A E Zhukov
Keyword(s):  
Numerical Simulation ◽  
Microring Resonator ◽  
Whispering Gallery Modes ◽  
Integer Number ◽  
Optical Coupling ◽  
Whispering Gallery ◽  
Straight Waveguide

Abstract We studied numerically optical coupling of whispering gallery modes of a microring resonator with modes of a radially directed straight waveguide connected to the microring. Optical outcoupling from the resonator through the waveguide was calculated for different widths of the latter. The output was maximized under conditions when the width fits an odd integer number of half-wavelengths of light inside the microring.

scholarly journals Nonstandard FDTD Simulation-Based Design of CROW Wavelength Splitters

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Naoki Okada ◽  
James B. Cole ◽  
Shigeki Yamada ◽  
Kensuke Ogawa ◽  
Yoshifumi Katayama
Keyword(s):  
Optical Waveguides ◽  
Optical Devices ◽  
Whispering Gallery Modes ◽  
Fdtd Simulation ◽  
High Q ◽  
Whispering Gallery ◽  
Simulation Based Design ◽  
Simulation Based ◽  
Fdtd Simulations ◽  
Difference Time

The finite-difference time-domain (FDTD) algorithm has been used in simulation-based designs of many optical devices, but it fails to reproduce high-Q whispering gallery modes (WGMs). On the other hand, the nonstandard (NS) FDTD algorithm can accurately compute WGMs and can be used to make simulation-based designs of WGM devices. Wavelength splitters using the coupled resonator optical waveguides (CROWs) based on WGM couplings have recently attracted attention because they are potentially ultracompact. In this paper, we design a CROW wavelength splitter using NS FDTD simulations and demonstrate high interchannel extinction ratios of over 20 dB.

Whispering-gallery modes in a triple-layer-coated microsphere resonator for refractive index sensors

2018 ◽  
Vol 427 ◽  
pp. 70-78 ◽  
Author(s):  
Mengyu Wang ◽  
Xueying Jin ◽  
Fei Li ◽  
Bolin Cai ◽  
Keyi Wang
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Triple Layer ◽  
Refractive Index Sensors

scholarly journals Spatial refractive index sensor using whispering gallery modes in an optically trapped microsphere

2007 ◽  
Vol 90 (16) ◽  
pp. 161101 ◽  
Author(s):  
Peter Zijlstra ◽  
Karen L. van der Molen ◽  
Allard P. Mosk
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Modes ◽  
Refractive Index Sensor ◽  
Whispering Gallery ◽  
Optically Trapped

High-Q BSW-whispering gallery modes in periodic multi-layer microring resonator

2018 ◽  
Vol 410 ◽  
pp. 479-482 ◽  
Author(s):  
Meng Zhang ◽  
Haitao Liu ◽  
Hongwen Zhou ◽  
Jing Xiao
Keyword(s):  
Microring Resonator ◽  
Whispering Gallery Modes ◽  
High Q ◽  
Whispering Gallery
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