期刊
IEEE SENSORS JOURNAL
卷 15, 期 9, 页码 5291-5295出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2015.2438114
关键词
PCF; macro bending; interferometer
资金
- Ministry of Human Resource Development, Government of India through the CENEMA Project
We experimentally demonstrated a photonic crystal fiber (PCF)-based modal interferometer with macrobending for the detection of analyte refractive index (RI). The interferometer consists of a section of large mode area PCF spliced between single mode fibers (SMFs), i.e., SMF-PCF-SMF structure. The PCF is subjected to macrobending of the order of cm(-1) and its modal properties for different values of macrobending radii have been analyzed using finite-element method. Experimental results show that this simple and compact interferometer has low temperature and power dependence but its RI sensitivity is found to be as high as 258 nm/RIU for a curvature of 0.36 cm(-1) (which is 165% higher than zero curvature) with a resolution 3.9 x 10(-5) RIU.
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