Sapphire Fiber Evanescent Wave Absorption in Turbid Media

2009 ◽  
Vol 63 (8) ◽  
pp. 932-935 ◽  
Author(s):  
Jian Zhang ◽  
Feibing Xiong ◽  
Nicholas Djeu
Keyword(s):  
Glassy Carbon ◽  
Chemical Sensors ◽  
Evanescent Wave ◽  
Fiber Optic ◽  
Wave Interaction ◽  
Carbon Powder ◽  
Control Applications ◽  
Wave Absorption ◽  
Water Band ◽  
Sapphire Fiber

The influence of particulates on sapphire fiber evanescent wave absorption by water has been studied. Suspensions containing microsized graphite flakes and glassy carbon powder were used. Conventional free-space transmittance measurements of these samples showed strong absorption and scattering, which severely screened the absorption by water. However, the absorption on the water band determined from the evanescent wave interaction was unaffected by the presence of the graphite flakes. These results indicate that fiber-optic evanescent wave chemical sensors may be suitable for process control applications involving turbid reactor streams.

scholarly journals Evanescent Wave Absorption Based S-shaped Fiber-optic Biosensor for Immunosensing Applications

2016 ◽  
Vol 168 ◽  
pp. 117-120 ◽  
Author(s):  
S. Chauhan ◽  
N. Punjabi ◽  
D. Sharma ◽  
S. Mukherji
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic ◽  
Wave Absorption

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.

Fiber-optic pH sensor based on evanescent wave absorption spectroscopy

1993 ◽  
Vol 65 (17) ◽  
pp. 2335-2338 ◽  
Author(s):  
Zhengfang. Ge ◽  
Chris W. Brown ◽  
Linfeng. Sun ◽  
Sze Cheng. Yang
Keyword(s):  
Absorption Spectroscopy ◽  
Evanescent Wave ◽  
Fiber Optic ◽  
Ph Sensor ◽  
Wave Absorption
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