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Title: In-line optofluidic refractive index sensing in a side-channel photonic crystal fiber
Authors: Dinh, Xuan Quyen
Wei, Lei
Zhang, Nan
Humbert, Georges
Wu, Zhifang
Li, Kaiwei
Shum, Perry Ping
Zhang, Nancy Meng Ying
Cui, Ying
Auguste, Jean-Louis
Keywords: Photonic Crystal Fibers
Fiber Optics Sensors
Issue Date: 2016
Source: Zhang, N., Humbert, G., Wu, Z., Li, K., Shum, P. P., Zhang, N. M. Y., et al. (2016). In-line optofluidic refractive index sensing in a side-channel photonic crystal fiber. Optics Express, 24(24), 27674-27682.
Series/Report no.: Optics Express
Abstract: An in-line optofluidic refractive index (RI) sensing platform is constructed by splicing a side-channel photonic crystal fiber (SC-PCF) with side-polished single mode fibers. A long-period grating (LPG) combined with an intermodal interference between LP01 and LP11 core modes is used for sensing the RI of the liquid in the side channel. The resonant dip shows a nonlinear wavelength shift with increasing RI over the measured range from 1.3330 to 1.3961. The RI response of this sensing platform for a low RI range of 1.3330-1.3780 is approximately linear, and exhibits a sensitivity of 1145 nm/RIU. Besides, the detection limit of our sensing scheme is improved by around one order of magnitude by introducing the intermodal interference.
ISSN: 1094-4087
DOI: 10.1364/OE.24.027674
Rights: © 2016 Optical Society of America.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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