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(a) Nanowire-based refractive index sensor on the tip of an optical fiber. (b) Structure-forming fiber cross-section.
Micromachining process for the production of a nanowire-based refractive index sensor on the tip of an optical fiber.
Scanning electron microscopic image of a typical sensor.
225 nm waist radius sensor's back-reflected spectra: (a) in aquatic medium; (b) in CO2, H2, air, and vacuum.
Spectral characteristic's shift (peak shift) as a function of RI change within the RI range between 1.322 and 1.33 for sensors with different waist radiuses rw.
Brief overview of recent work in micro-nanowires refractive index sensing (see Refs. 4, 5, 11–13, 26, and 27 ).
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