In-situ growth of AuNPs on WS2@U-bent optical fiber for evanescent wave absorption sensor

2018 ◽  
Vol 441 ◽  
pp. 1072-1078 ◽  
Author(s):  
Suzhen Zhang ◽  
Yuefeng Zhao ◽  
Chao Zhang ◽  
Shouzhen Jiang ◽  
Cheng Yang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
In Situ Growth ◽  
Wave Absorption

In situ growth of Au–Ag bimetallic nanorings on optical fibers for enhanced plasmonic sensing

2020 ◽  
Vol 8 (22) ◽  
pp. 7552-7560 ◽  
Author(s):  
Se Shi ◽  
Anran Li ◽  
Renliang Huang ◽  
Jing Yu ◽  
Shuzhou Li ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Oxidation Resistance ◽  
Optical Fibers ◽  
Fiber Surface ◽  
Metal Deposition ◽  
In Situ Growth ◽  
Plasmonic Sensing

Au–Ag bimetallic nanorings were grown in situ on an optical fiber surface via bioinspired PDA, a synergetic GRR and metal deposition, which exhibited enhanced LSPR sensitivity and oxidation resistance.

Evanescent Wave Absorption Spectroscopy by Means of Bi-Tapered Multimode Optical Fibers

1998 ◽  
Vol 52 (4) ◽  
pp. 546-551 ◽  
Author(s):  
Anna Grazia Mignani ◽  
Riccardo Falciai ◽  
Leonardo Ciaccheri
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Absorption Spectroscopy ◽  
Evanescent Wave ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Experimental Results ◽  
Multimode Optical Fiber ◽  
Wave Absorption ◽  
Reproducible Technique

This paper discusses the theoretical and experimental implications of tapering a multimode optical fiber with a view to its use in evanescent wave absorption spectroscopy. Good experimental results are obtained, showing the possibility of quadruplicating the absorbance efficiency. This easy and reproducible technique for taper fabrication is suitable for the implementation of both probes for spectroscopy and chemically assisted fiber-optic sensors.

Near-Ultraviolet Evanescent-Wave Absorption Sensor Based on a Multimode Optical Fiber

1998 ◽  
Vol 70 (8) ◽  
pp. 1639-1645 ◽  
Author(s):  
Radislav A. Potyrailo ◽  
Steven E. Hobbs ◽  
Gary M. Hieftje
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
Multimode Optical Fiber ◽  
Wave Absorption ◽  
Near Ultraviolet

In situ Near-IR Cure Monitoring of a Model Epoxy Matrix Composite

1996 ◽  
Vol 50 (7) ◽  
pp. 900-905 ◽  
Author(s):  
Sheryl Cossins ◽  
Mike Connell ◽  
Bill Cross ◽  
Robb Winter ◽  
Jon Kellar
Keyword(s):  
Refractive Index ◽  
Infrared Spectrum ◽  
Optical Fiber ◽  
Evanescent Wave ◽  
Near Infrared ◽  
Internal Reflection ◽  
Silica Optical Fiber ◽  
Lower Refractive Index ◽  
Near Infrared Spectrum

To improve the performance of composites it is imperative that the interphase region between the inorganic reinforcement and the polymer matrix be more completely understood. It is in this region that the stress transfer between the matrix and the reinforcement occurs. To this end, the curing of epoxy adjacent to an embedded silica optical fiber has been monitored in situ by evanescent wave spectroscopy. The epoxy studied is partially fluorinated and has a lower refractive index than the silica optical fiber. This combination of epoxy/silica served as a model composite system. The lower refractive index of the partially fluorinated epoxy allowed the silica optical fiber to be used as a waveguide for the internal reflection of near-infrared light. The epoxy curing was determined as a function of time and temperature by analysis of the near-infrared spectrum from the epoxy adjacent to the fiber obtained by the interaction of the evanescent wave that occurs at each internal reflection with the low-refractive-index epoxy. The results obtained from the examination of the near-infrared spectrum, particularly the disappearance of the NH2 stretching/bending combination band at ∼4925 cm−1 and the concomitant increase of the C–N overtone band at ∼4725 cm−1, showed that epoxy ring-opening and cross-linking reactions could be followed in real time. Finally, treatment of the fiber with a silane coupling agent had no observable effect on the curing reaction of the epoxy.

Sign in / Sign up

Export Citation Format

Share Document