Enhanced responsivity with skew ray excitation of reflection- and transmission-type refractometric sensors

被引：9
|
作者：
Chen, George Y. [1 ]
Codemard, Christophe A. [2 ]
Lewis, Richard J. [3 ]
Jankowski, Lukasz [4 ]
Chan, Jaclyn S. [1 ]
Gorman, Philip M. [2 ]
Zervas, Michalis N. [1 ,2 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO9 5NH, Hants, England
[2] SPI Lasers, Adv Laser Lab, Southampton, Hants, England
[3] Cardiff Univ, Cardiff Sch Biosci, Cardiff CF10 3AX, S Glam, Wales
[4] Polish Acad Sci, Inst Fundamental Technol Res, Warsaw, Poland
来源：
OPTICS LETTERS | 2014年 / 39卷 / 13期
关键词：
PHOTONIC-CRYSTAL FIBER; REFRACTIVE-INDEX SENSOR; OPTICAL FIBERS; MICROFIBER; INTERFEROMETER;
D O I：
10.1364/OL.39.003822
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The responsivity of optical fibers to refractive index can be enhanced using high-order skew rays compared with using meridional rays. Skew rays can have a much higher number of reflections with increased interaction length along the core-cladding interface, which gives rise to stronger interactions with the external medium. Reflection/transmission-type refractometric sensors based on twin-coupled-core and multimode fibers showed one/two orders of magnitude increase in responsivity with skew ray excitation. The responsivity and sensitivity for the two types are similar to 2000%/RIU, similar to 1400%/RIU, and 4.9 x 10(-5) RIU, 7.0 x 10(-5) RIU, respectively. (C) 2014 Optical Society of America
引用
收藏
页码：3822 / 3825
页数：4
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