Design on-chip width-modulated line-defect cavity array structure for multiplexing complex refractive index sensing

2017 ◽  
Vol 257 ◽  
pp. 8-14 ◽  
Author(s):  
Fujun Sun ◽  
Jian Zhou ◽  
Lijun Huang ◽  
Zhongyuan Fu ◽  
Zhaoxiang Ding ◽  
...  
Keyword(s):  
Refractive Index ◽  
Complex Refractive Index ◽  
Line Defect ◽  
Refractive Index Sensing ◽  
Array Structure ◽  
On Chip ◽  
Cavity Array

On-chip integrated optofluidic complex refractive index sensing using silicon photonic crystal nanobeam cavities

2016 ◽  
Vol 41 (6) ◽  
pp. 1197 ◽  
Author(s):  
Xingwang Zhang ◽  
Guangya Zhou ◽  
Peng Shi ◽  
Han Du ◽  
Tong Lin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Complex Refractive Index ◽  
Refractive Index Sensing ◽  
Silicon Photonic ◽  
On Chip ◽  
Nanobeam Cavities

On-chip integrated differential optical microring refractive index sensing platform based on a laminar flow scheme

2015 ◽  
Vol 40 (17) ◽  
pp. 4106 ◽  
Author(s):  
Dongwan Kim ◽  
Paula Popescu ◽  
Mark Harfouche ◽  
Jacob Sendowski ◽  
Maria-Eleni Dimotsantou ◽  
...  
Keyword(s):  
Refractive Index ◽  
Laminar Flow ◽  
Flow Scheme ◽  
Refractive Index Sensing ◽  
Sensing Platform ◽  
On Chip

Design of refractive index sensing based on 2D PhC air-slot width-modulated line-defect microcavity

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Chayma Mosbah ◽  
Ahlem Benmerkhi ◽  
Mohamed Bouchemat ◽  
Touraya Bouchemat
Keyword(s):  
Refractive Index ◽  
Slot Width ◽  
Line Defect ◽  
Refractive Index Sensing

scholarly journals Ultra-High Refractive Index Sensing Structure Based on a Metal-Insulator-Metal Waveguide-Coupled T-Shape Cavity with Metal Nanorod Defects

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1433 ◽  
Author(s):  
Yuan-Fong Chou Chau ◽  
Chung-Ting Chou Chao ◽  
Hung Ji Huang ◽  
N. T. R. N. Kumara ◽  
Chee Ming Lim ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Rectangular Cavity ◽  
Cavity Resonance ◽  
Refractive Index Sensor ◽  
Metal Insulator ◽  
Refractive Index Sensing ◽  
Metal Insulator Metal ◽  
On Chip ◽  
Mim Waveguide

An ultra-high plasmonic refractive index sensing structure composed of a metal–insulator–metal (MIM) waveguide coupled to a T-shape cavity and several metal nanorod defects is proposed and investigated by using finite element method. The designed plasmonic MIM waveguide can constitute a cavity resonance zone and the metal nanorod defects can effectively trap the light in the T-shape cavity. The results reveal that both the size of defects in wider rectangular cavity and the length of narrower rectangular cavity are primary factors increasing the sensitivity performance. The sensitivity can achieve as high as 8280 nm/RIU (RIU denotes the refractive index unit), which is the highest sensitivity reported in plasmonic MIM waveguide-based sensors to our knowledge. In addition, the proposed structure can also serve as a temperature sensor with temperature sensitivity as high as 3.30 nm/°C. The designed structure with simplicity and ease of fabrication can be applied in sensitivity nanometer scale refractive index sensor and may potentially be used in optical on-chip nanosensor.

scholarly journals All-optical on-chip sensor for high refractive index sensing

2015 ◽  
Vol 106 (3) ◽  
pp. 031116 ◽  
Author(s):  
Yazhao Liu ◽  
H. W. M. Salemink
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Refractive Index Sensing ◽  
All Optical ◽  
On Chip

scholarly journals Broadband spectroscopy of astrophysical ice analogues

2019 ◽  
Vol 629 ◽  
pp. A112 ◽  
Author(s):  
B. M. Giuliano ◽  
A. A. Gavdush ◽  
B. Müller ◽  
K. I. Zaytsev ◽  
T. Grassi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Time Domain ◽  
Complex Refractive Index ◽  
Far Infrared ◽  
Infrared Region ◽  
Thz Radiation ◽  
The Real ◽  
Thz Range ◽  
The Time Domain

Context. Reliable, directly measured optical properties of astrophysical ice analogues in the infrared and terahertz (THz) range are missing from the literature. These parameters are of great importance to model the dust continuum radiative transfer in dense and cold regions, where thick ice mantles are present, and are necessary for the interpretation of future observations planned in the far-infrared region. Aims. Coherent THz radiation allows for direct measurement of the complex dielectric function (refractive index) of astrophysically relevant ice species in the THz range. Methods. We recorded the time-domain waveforms and the frequency-domain spectra of reference samples of CO ice, deposited at a temperature of 28.5 K and annealed to 33 K at different thicknesses. We developed a new algorithm to reconstruct the real and imaginary parts of the refractive index from the time-domain THz data. Results. The complex refractive index in the wavelength range 1 mm–150 μm (0.3–2.0 THz) was determined for the studied ice samples, and this index was compared with available data found in the literature. Conclusions. The developed algorithm of reconstructing the real and imaginary parts of the refractive index from the time-domain THz data enables us, for the first time, to determine the optical properties of astrophysical ice analogues without using the Kramers–Kronig relations. The obtained data provide a benchmark to interpret the observational data from current ground-based facilities as well as future space telescope missions, and we used these data to estimate the opacities of the dust grains in presence of CO ice mantles.

Sign in / Sign up

Export Citation Format

Share Document