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Sensors 2017, 17(10), 2278; https://doi.org/10.3390/s17102278

Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy

1
Department of Telecommunications and Teleinformatics, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
2
Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
3
Fiber Optics Research Center of Russian Academy of Sciences, Moscow 119333, Russia
*
Author to whom correspondence should be addressed.
Received: 4 September 2017 / Revised: 26 September 2017 / Accepted: 1 October 2017 / Published: 6 October 2017
(This article belongs to the Special Issue Intelligent Sensing Technologies for Nondestructive Evaluation)
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Abstract

In this paper, an application of negative curvature hollow core fiber (NCHCF) in an all-fiber, multiphoton fluorescence sensor setup is presented. The dispersion parameter (D) of this fiber does not exceed the value of 5 ps/nm × km across the optical spectrum of (680–750) nm, making it well suited for the purpose of multiphoton excitation of biological fluorophores. Employing 1.5 m of this fiber in a simple, all-fiber sensor setup allows us to perform multiphoton experiments without any dispersion compensation methods. Multiphoton excitation of nicotinamide adenine dinucleotide (NADH) and flavin adenine dinucleotide (FAD) with this fiber shows a 6- and 9-fold increase, respectively, in the total fluorescence signal collected when compared with the commercial solution in the form of a hollow-core photonic band gap fiber (HCPBF). To the author’s best knowledge, this is the first time an NCHCF was used in an optical-fiber sensor setup for multiphoton fluorescence experiments. View Full-Text
Keywords: negative curvature fiber; hollow core fiber; multiphoton fluorescence; photonic crystal fiber sensor negative curvature fiber; hollow core fiber; multiphoton fluorescence; photonic crystal fiber sensor
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Popenda, M.A.; Stawska, H.I.; Mazur, L.M.; Jakubowski, K.; Kosolapov, A.; Kolyadin, A.; Bereś-Pawlik, E. Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy. Sensors 2017, 17, 2278.

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