scholarly journals Modeling of coupled-resonator optical waveguide (CROW) based refractive index sensors using pixelized spatial detection at a single wavelength

2011 ◽  
Vol 19 (22) ◽  
pp. 22227 ◽  
Author(s):  
Ting Lei ◽  
Andrew W. Poon
Keyword(s):  
Refractive Index ◽  
Optical Waveguide ◽  
Refractive Index Sensors ◽  
Spatial Detection ◽  
Coupled Resonator

Dual Fano resonance control and refractive index sensors based on a plasmonic waveguide-coupled resonator system

2018 ◽  
Vol 427 ◽  
pp. 326-330 ◽  
Author(s):  
Xiling Shi ◽  
Lianjun Ma ◽  
Zhidong Zhang ◽  
Yue Tang ◽  
Yanjun Zhang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fano Resonance ◽  
Plasmonic Waveguide ◽  
Refractive Index Sensors ◽  
Resonator System ◽  
Resonance Control ◽  
Coupled Resonator

Refractive Index Sensors using Polarization-independent Metamaterial

2017 ◽  
Vol 137 (11) ◽  
pp. 415-416 ◽  
Author(s):  
Tomoki Shimizu ◽  
Yoshiaki Kanamori ◽  
Kazuhiro Hane
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensors ◽  
Polarization Independent

Vertically Coupled Wedge Disks for a Coupled-Resonator Optical Waveguide

2020 ◽  
Author(s):  
Marc-Antoine Bianki ◽  
Cedric Lemieux-Leduc ◽  
Regis Guertin ◽  
Yves-Alain Peter
Keyword(s):  
Optical Waveguide ◽  
Coupled Resonator

scholarly journals NONLINEAR OPTICAL WAVEGUIDE STRUCTURE FOR SENSOR APPLICATION: TM CASE

2007 ◽  
Vol 21 (30) ◽  
pp. 5075-5089 ◽  
Author(s):  
HALA M. KHALIL ◽  
MOHAMMED M. SHABAT ◽  
SOFYAN A. TAYA ◽  
MAZEN M. ABADLA
Keyword(s):  
Refractive Index ◽  
Theoretical Analysis ◽  
Closed Form ◽  
Optical Waveguide ◽  
Effective Refractive Index ◽  
Nonlinear Optical ◽  
Waveguide Structure ◽  
Analytical Expressions ◽  
Evanescent Waveguide ◽  
Waveguide Sensor

In this work, we present an extensive theoretical analysis of nonlinear optical waveguide sensor. The waveguide under consideration consists of a thin dielectrica film surrounded by a self-focused nonlinear cladding and a linear substrate. The nonlinearity of the cladding is considered to be of Kerr-type. Both cases, when the effective refractive index is greater and when it is smaller than the index of the guiding layer, are discussed. The sensitivity of the effective refractive index to any change in the cladding index in evanescent optical waveguide sensor is derived for TM modes. Closed form analytical expressions and normalized charts are given to provide the conditions required for the sensor to exhibit its maximum sensitivity. The results are compared with those of the well-known linear evanescent waveguide sensors.

Strain, torsion and refractive index sensors based on helical long period fibre grating inscribed in small-core fibre for structural condition monitoring

2021 ◽  
Vol 24 (6) ◽  
pp. 1248-1255
Author(s):  
Cailing Fu ◽  
Yi-Qing Ni ◽  
Tong Sun ◽  
Yiping Wang ◽  
Siqi Ding ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Sensitivity ◽  
Single Mode ◽  
Structural Condition ◽  
Core Diameter ◽  
Small Core ◽  
Long Period ◽  
Sensing Applications ◽  
Core Fibre ◽  
Refractive Index Sensors

This study is intended to develop long period fibre grating sensors for potential applications in environmental and durability monitoring of coastal structures. High-quality helical long period fibre gratings (HLPFGs) are inscribed in different types of small-core single mode fibre (SMF) by use of hydrogen-oxygen flame heating technique. A detailed investigation of the effect of core diameter on their transmission spectrum and optimum length of the HLPFG has been pursued. A longer length is required to achieve the same coupling attenuation in a smaller-core SMF than that of a larger-core fibre. The strain, torsion and refractive index (RI) properties of the HLPFG is investigated experimentally to develop a high-sensitivity sensor. The experimental results show that the strain sensitivity could be enhanced by means of employing a larger-core diameter SMF. Moreover, the HLFPGs are also sensitive to the torsion and external RI. Hence, such HLFPGs have great potential for sensing applications.

High contrast and sensitive near-infrared refractive index sensors based on metal-dielectric-metal plasmonic metasurfaces

2021 ◽  
pp. 413469
Author(s):  
Thu Trang Hoang ◽  
Thanh Son Pham ◽  
Xuan Bach Nguyen ◽  
Huu Tu Nguyen ◽  
Khai Q. Le ◽  
...  
Keyword(s):  
Refractive Index ◽  
Near Infrared ◽  
High Contrast ◽  
Refractive Index Sensors
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