High refractive index sensing based on single leaky mode attenuation

2013 ◽  
Vol 294 ◽  
pp. 198-201 ◽  
Author(s):  
Lin-Lin Xue ◽  
Di Che ◽  
Li Yang
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Leaky Mode ◽  
Refractive Index Sensing

Three-band perfect absorber with high refractive index sensing based on active tunable Dirac semimetal

2021 ◽  
Author(s):  
Zhiyou Li ◽  
Zao Yi ◽  
Tinting Liu ◽  
Li Liu ◽  
Xifang Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Gold Layer ◽  
Perfect Absorber ◽  
Refractive Index Sensing ◽  
Dirac Semimetal

In this paper, we designed a three-band narrowband perfect absorber based on Bulk Dirac semimetallic (BDS) metamaterials. The absorber consists of a hollow Dirac semimetallic layer above, a gold layer...

Double Fano-type resonances in heptamer-hole array transmission spectra with high refractive index sensing

2015 ◽  
Vol 62 (15) ◽  
pp. 1241-1247 ◽  
Author(s):  
Jinna He ◽  
Pei Ding ◽  
Junqiao Wang ◽  
Chunzhen Fan ◽  
Erjun Liang
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Hole Array ◽  
Transmission Spectra ◽  
Refractive Index Sensing

scholarly journals A Temperature Plasmonic Sensor Based on a Side Opening Hollow Fiber Filled with High Refractive Index Sensing Medium

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3730 ◽  
Author(s):  
Lei Zhao ◽  
Haixia Han ◽  
Nannan Luan ◽  
Jianfei Liu ◽  
Li Song ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Plasmon Mode ◽  
Core Mode ◽  
Plasmonic Sensor ◽  
Temperature Range ◽  
Refractive Index Sensing ◽  
Microstructured Optical Fiber ◽  
Coupling Characteristics ◽  
Fabrication Tolerance

A surface plasmon resonance temperature sensor based on a side opening hollow-core microstructured optical fiber is proposed in this paper. This design employs a gold nanowire to excite the plasmon mode, and can be easily filled with the sensing medium through the side opening of the fiber, which not only simplifies the fabrication of the sensor but can also use the high refractive index sensing medium. The coupling characteristics, sensing performance and fabrication tolerance of the sensor are analyzed by using the finite element method. The simulation results indicate that the maximum sensitivity is 3.21 nm/°C for the x-polarized core mode in the temperature range of 13.27–50.99 °C, and 4.98 nm/°C for the y-polarized core mode in the temperature range of 14.55–51.19 °C, when benzene is used as the sensing medium. The sensor also shows a good stability in the range of ±10% fabrication tolerance.

scholarly journals Laser nano-filament explosion for enabling open-grating sensing in optical fibre

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Keivan Mahmoud Aghdami ◽  
Abdullah Rahnama ◽  
Erden Ertorer ◽  
Peter R. Herman
Keyword(s):  
Refractive Index ◽  
Optical Fibre ◽  
Chemical Etching ◽  
Pulsed Laser ◽  
Bragg Gratings ◽  
High Refractive Index ◽  
Refractive Index Sensing ◽  
Index Contrast ◽  
Fibre Bragg Gratings ◽  
Processing Steps

AbstractEmbedding strong photonic stopbands into traditional optical fibre that can directly access and sense the outside environment is challenging, relying on tedious nano-processing steps that result in fragile thinned fibre. Ultrashort-pulsed laser filaments have recently provided a non-contact means of opening high-aspect ratio nano-holes inside of bulk transparent glasses. This method has been extended here to optical fibre, resulting in high density arrays of laser filamented holes penetrating transversely through the silica cladding and guiding core to provide high refractive index contrast Bragg gratings in the telecommunication band. The point‐by‐point fabrication was combined with post-chemical etching to engineer strong photonic stopbands directly inside of the compact and flexible fibre. Fibre Bragg gratings with sharply resolved π-shifts are presented for high resolution refractive index sensing from $${n}_{{{{{{\rm{H}}}}}}}$$ n H  = 1 to 1.67 as the nano-holes were readily wetted and filled with various solvents and oils through an intact fibre cladding.

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