Journal
CHINESE OPTICS LETTERS
Volume 10, Issue 9, Pages -Publisher
CHINESE LASER PRESS
DOI: 10.3788/COL201210.090601
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Funding
- National 973 Program of China [2010CB327800]
- Natural Science Foundation of Jiangsu Province of China [BK2010247]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A simple and compact refractive index sensor is demonstrated by tapering a photonic crystal fiber (PCF) in-line interferometer. The PCF is spliced between two single-mode fibers and tapered via hydrofluoric acid etching. Its sensitivity in liquid is more than an order of magnitude larger than the untapered one. By optimizing the etching process, we can fabricate more uniformly and thinly tapered PCF interferometers with higher sensitivity in the future.
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