scholarly journals Spatial Frequency Multiplexing of Fiber-Optic Interferometric Refractive Index Sensors Based on Graded-Index Multimode Fibers

Sensors ◽  
2012 ◽  
Vol 12 (9) ◽  
pp. 12377-12385 ◽  
Author(s):  
Li Liu ◽  
Yuan Gong ◽  
Yu Wu ◽  
Tian Zhao ◽  
Hui-Juan Wu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Spatial Frequency ◽  
Fiber Optic ◽  
Multimode Fibers ◽  
Graded Index ◽  
Frequency Multiplexing ◽  
Refractive Index Sensors

scholarly journals Fiber Optic Refractive Index Sensors Based on a Ball Resonator and Optical Backscatter Interrogation

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6199
Author(s):  
Madina Shaimerdenova ◽  
Takhmina Ayupova ◽  
Marzhan Sypabekova ◽  
Daniele Tosi
Keyword(s):  
Refractive Index ◽  
Reflection Spectrum ◽  
Return Loss ◽  
Fiber Optic ◽  
Single Mode ◽  
Wavelength Shift ◽  
Amplitude Change ◽  
Highly Sensitive ◽  
Refractive Index Sensors ◽  
Index Unit

In this work, we introduced fabrication and interrogation of simple and highly sensitive fiber-optic refractive index (RI) sensors based on ball resonators built on the tip of single-mode fibers. The probes have been fabricated through a CO2 fiber splicer, with a fast (~600 s) and repeatable method. The ball resonator acted as a weak interferometer with a return loss below −50 dB and was interrogated with an optical backscatter reflectometer measuring the reflection spectrum. The ball resonators behaved as weak interferometers with a shallow fringe and a spectrum that appeared close to a random signal, and RI sensitivity could be measured either through wavelength shift or amplitude change. In this work, we reported four samples having sensitivity ranges 48.9–403.3 nm/RIU and 256.0–566.2 dB/RIU (RIU = refractive index unit). Ball resonators appeared as a sensitive and robust platform for RI sensing in liquid and can be further functionalized for biosensing.

scholarly journals Design of Silica Multimode Optical Fibers with Extremely Enlarged Core Diameter for Laser-Based Multi-Gigabit Short-Range Optical Networks

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 37 ◽  
Author(s):  
Anton V. Bourdine ◽  
Vladimir A. Burdin ◽  
Vijay Janyani ◽  
Ashish Kumar Ghunawat ◽  
Ghanshyam Singh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Networks ◽  
Optical Fibers ◽  
Short Range ◽  
Fiber Optic ◽  
Index Profile ◽  
Core Diameter ◽  
Simple Method ◽  
Graded Index ◽  
Comparison Results

This work presents an alternative fast and simple method for the design of a refractive index profile of silica multimode optical fibers (MMFs) with extremely enlarged core diameters of up to 100 µm for laser-based multi-gigabit short-range optical networks. We demonstrate some results of 100 µm core MMF graded index profile optimization performed by a proposed solution, which provides a selected mode staff differential mode delay (DMD) reduction over the “O”-band under particular launching conditions. Earlier on, a developed alternative model for a piecewise regular multimode fiber optic link operating in a few-mode regime for the computation of laser-excited optical pulse dynamics during its propagation over an irregular silica graded-index MMF with an extremely large core diameter, is utilized to estimate the potentiality of fiber optic links with the described MMFs. Here, we also present the comparison results of the simulation of 10GBase-LX optical signal transmission over 100 µm core MMFs with conventional and optimized graded-index refractive index profiles.

scholarly journals Fiber optic refractive index sensors through spectral detection of Rayleigh backscattering in a chemically etched MgO-based nanoparticle-doped fiber

2018 ◽  
Vol 43 (24) ◽  
pp. 5945 ◽  
Author(s):  
Marzhan Sypabekova ◽  
Sanzhar Korganbayev ◽  
Wilfried Blanc ◽  
Takhmina Ayupova ◽  
Aliya Bekmurzayeva ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Rayleigh Backscattering ◽  
Spectral Detection ◽  
Refractive Index Sensors

Optimization for Closed-Loop Surface Plasmon Resonance Fiber-Optic Refractive Index Sensors Based on Tapered Probes

2015 ◽  
Vol 44 (2) ◽  
pp. 228001
Author(s):  
付丽辉 FU Li-hui ◽  
尹文庆 YIN Wen-qing ◽  
王马华 WANG Ma-hua ◽  
季仁东 JI Ren-dong ◽  
居勇峰 JU Yong-feng
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Closed Loop ◽  
Fiber Optic ◽  
Loop Surface ◽  
Refractive Index Sensors

scholarly journals Analysis of the use of tapered graded-index polymer optical fibers for refractive-index sensors

2008 ◽  
Vol 16 (21) ◽  
pp. 16616 ◽  
Author(s):  
J. Arrue ◽  
F. Jiménez ◽  
G. Aldabaldetreku ◽  
G. Durana ◽  
J. Zubia ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Graded Index ◽  
Refractive Index Sensors ◽  
Polymer Optical Fibers

Fiber-optic refractive-index sensors based on transmissive and reflective thin-core fiber modal interferometers

2010 ◽  
Vol 283 (10) ◽  
pp. 2136-2139 ◽  
Author(s):  
Tian-Hao Xia ◽  
A. Ping Zhang ◽  
Bobo Gu ◽  
Jing-Jing Zhu
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Core Fiber ◽  
Refractive Index Sensors

Expermental Studies of Multimode Interference Based Fiber Optic Refractive Index Sensors

2010 ◽  
Vol 37 (6) ◽  
pp. 1516-1519 ◽  
Author(s):  
赵宇 Zhao Yu ◽  
金永兴 Jin Yongxing ◽  
董新永 Dong Xinyong ◽  
王剑锋 Wang Jianfeng
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Multimode Interference ◽  
Refractive Index Sensors
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