Abstract
Abstract
A highly sensitive strain sensor based on a photonic crystal fiber (PCF) Mach–Zehnder interferometer (MZI) was proposed. The MZI was formed by splicing two sections of no-core fibers (NCFs) with a piece of PCF between two single-mode fibers. The sensor has exhibited high fringe visibility of up to 22 dB in air and high strain sensitivity of 2.09 pm μ
ε
−1 in the range of 0 ∼ 2973 μ
ε. The strain characteristics of the sensor with different lengths of PCF were also investigated. Moreover, a wavelength hysteresis of less than 0.2 nm and temperature sensitivity of 11.28 pm °C−1 were measured. Additionally, the sensor has the advantages of easy fabrication, larger strain measurement, high extinction ratio, and high resolution, which shows great potential in the field of strain measurement.
Funder
Natural Science Foundation of Hunan Province
National Natural Science Foundation of China
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
2 articles.
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