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We demonstrate the nanoparticle analyses based on elongated-abruptly-tapered micro fiber interferometer. The charged nanoparticles generating from incomplete combustion of carboncontaining compounds are stringently attached onto micro interferometer at equal distance separation to analyze nanoparticle sizes.
We investigate the influence of taper geometry in Er/Yb co-doped fiber (EYDF) strain sensors using tunable abrupt-tapered Mach-Zehnder interferometers (AT-MZI). It was found that the sensitivity of the strain sensor can be enhanced by reducing both the waist diameters of, and the span between the two abrupt tapers. For strains under 0.2% in AT-MZIs with a consistent span of 10 mm, the strain-induced...
We report a micro Mach–Zehnder index sensor with a device length of 179.5 using two micro-abrupt-tapers in a cladding-reduced strongly-guiding fiber based on a focused laser beam. The cladding of strongly-guiding fiber is chemically etched before irradiation by a focused laser beam. The index sensitivity is 600 and 4000 nm/refractive index unit, respectively,...
We demonstrate tunable Mach-Zehnder interferometer with an extinction ratio of above 31.6 dB through interference between core and cladding modes using two adjacent nonadiabatic tapers in a short length (<;; 13 mm) of highly Er/Yb co-doped fiber.
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