ITO Coated Optical Fiber Refractometers Based on Resonances in the Infrared Region

被引:65
作者
Zamarreno, Carlos R. [1 ]
Hernaez, Miguel [1 ]
Del Villar, Ignacio [1 ]
Matias, Ignacio R. [1 ]
Arregui, Francisco J. [1 ]
机构
[1] Univ Publ Navarra, Dept Elect & Elect Engn, Pamplona 31006, Spain
关键词
Indium tin oxide (ITO); infrared spectroscopy; optical fiber sensor; refractometer; resonance; REFRACTIVE-INDEX;
D O I
10.1109/JSEN.2009.2034628
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this work, it is presented the fabrication of optical fiber refractometers in the infrared region based on the deposition of indium tin oxide (ITO) coatings onto optical fibers core. ITO coatings act as the resonance supporting layer allowing the coupling of light at specific wavelengths from the waveguide to the ITO-coating/external medium region as a function of the refractive index of the external medium. The utilization of ITO coatings allows the fabrication of robust, highly reproducible and easy to implement resonance based refractometers. The results obtained showed an average sensitivity of 3125 nm/refractive index unit, which is comparable to the existing devices based either on resonance or other techniques. The fabricated devices showed fast response and no dependence with the length of the sensitive region.
引用
收藏
页码:365 / 366
页数:2
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