Evanescent wave interaction with nanoparticles on optical fiber modulate side emission of germicidal ultraviolet light

2021 ◽  
Author(s):  
Zhe Zhao ◽  
Mariana Lopes ◽  
Emma Westerhoff ◽  
Xiangxing Long ◽  
Ho Jung Rho ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Ultraviolet Light ◽  
Evanescent Wave ◽  
Wave Interaction ◽  
Silica Nanoparticle ◽  
Nanoparticle Coating ◽  
Quartz Optical Fiber ◽  
Side Emission ◽  
Uv C

Silica nanoparticle coating on quartz optical fiber facilitates side-emission of germicidal ultraviolet light (UV-C), which shows promise for disinfection of contaminated air, water, and surfaces. However, the emitted light along...

Research Advancements in Optical Fiber Evanescent Wave Biochemical Sensing

2021 ◽  
Vol 58 (3) ◽  
pp. 0300005-30000571
Author(s):  
赵旭东 Zhao Xudong ◽  
许银生 Xu Yinsheng ◽  
章向华 Zhang Xianghua ◽  
赵修建 Zhao Xiujian
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
Biochemical Sensing

Plastic Optical Fiber Sensor for Detection of Ethanol Concentrations

2020 ◽  
Vol 307 ◽  
pp. 84-89
Author(s):  
Aisyah Hanim Surani ◽  
Affa Rozana Abdul Rashid ◽  
N. Arsad ◽  
Amna Afiqah Nasution Hakim
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Deionized Water ◽  
Plastic Optical Fiber ◽  
Polymer Optical Fiber ◽  
Ethanol Sensor ◽  
Output Ratio ◽  
Higher Sensitivity

An optimized study of tapered polymer optical fiber (POF) for measurement of different concentration of ethanol in deionized water (0.5%-3.5%) is proposed and demonstrated. This sensor operated based on evanescent wave absorption principle. The cladding of PMMA based POF is removed using organic solvents which can be used to create tapered POF. The unclad length around 1 cm and 3 cm as well as the waist diameters of POF in the range of 5 mm and 8 mm were compared for their efficiency as an ethanol sensor based on power output ratio values. Tapered POF with smaller waist diameter and longer tapered length showed higher sensitivity as ethanol sensor. Therefore, by tailoring the length and tapered diameter of POF, high sensitivity of ethanol sensor can be fabricated.

VOCs Detection Based on Evanescent Wave Coupling of Dye-Coated Optical Fiber

2015 ◽  
Vol 15 (5) ◽  
pp. 3021-3025 ◽  
Author(s):  
Se-Hyuk Yeom ◽  
Byoung-Ho Kang ◽  
Chang-Taek Seo ◽  
Dong-Ic Lee ◽  
Han-Jae Shin ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Evanescent Wave ◽  
Wave Coupling

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.

Sign in / Sign up

Export Citation Format

Share Document