Abstract:In this work we discuss the effect of infiltration of different antiresonant fibers with low-refractive-index liquids, such as water and ethanol, on their optical properties. The fibers with single- and double-ring capillaries have been designed to show broad transmission bands in visible and near infrared range as it is required for optofluidics, in particular spectrophotometric applications. We show experimentally that their transmission windows shift toward shorter wavelengths and only modestly reduce their… Show more
“…However, absorbance of any water-based solution at ca. 1400 -1600 nm is very high, and it makes standard absorbance measurements unreliable [36,37]. Taking into consideration that the interaction length of light and the solution in the microcavity does not exceed 60 µm, the application of the μIMZI may be considered as a unique technique for identification of minute changes in both RI and absorbance.…”
In this work, we demonstrate a novel method for multi-domain analysis of properties of analytes in volumes as small as picoliter, combining electrochemistry and optical measurements. A microcavity in-line Mach-Zehnder...
“…However, absorbance of any water-based solution at ca. 1400 -1600 nm is very high, and it makes standard absorbance measurements unreliable [36,37]. Taking into consideration that the interaction length of light and the solution in the microcavity does not exceed 60 µm, the application of the μIMZI may be considered as a unique technique for identification of minute changes in both RI and absorbance.…”
In this work, we demonstrate a novel method for multi-domain analysis of properties of analytes in volumes as small as picoliter, combining electrochemistry and optical measurements. A microcavity in-line Mach-Zehnder...
“…The unique feature of hollow core fibers are pass-band spectral characteristics and for some geometries very low transmission losses. Here in the paper, we were focused on selected group of hollow core fibers, called in literature as antiresonant optical fibers (ARFs) 5,6 . The main aim of our work was to see how the polymer microtip manufactured on the end face of standard single-mode fiber (SMF) for telecommunication wavelengths affects the transmission properties of the selected ARFs.…”
Polymer microtips manufactured at the end face of standard optical fibers have been used for effectively coupling with a selected antiresonant fibers (ARFs). Four tested ARFs had similar geometry, 7 capillaries placed around the central air core. It was shown how such coupling structure modified the ARFs spectral characteristics. Applying polymer microtip successfully excited additional bands. Illumination of the ARF with a microtip that operates as a microlens causes a change in numerical aperture and mode number.
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