Measurement of diameter of sub-micrometer fiber based on analysis of scattered light intensity distribution under standing wave illumination

This paper proposes a technique to measure a diameter of a sub-micrometer fiber having diameters of less than 1 μm. The proposed technique uses counter-propagating beams as an illumination, which form the standing wave surrounding the fiber. By actively controlling the spatial phase of the standing...

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Bibliographic Details
Published inCIRP annals Vol. 71; no. 1; pp. 421 - 424
Main Authors Michihata, Masaki, Murakami, Sojiro, Kadoya, Shotaro, Takahashi, Satoru
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2022
Subjects
Diameter
Mie scattering theory
Nanofiber
Standing wave
Sub-micrometer fiber
Tapered optical fiber
Nanofiber
Sub-micrometer fiber
Mie scattering theory
Tapered optical fiber
Diameter
Standing wave
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Summary:This paper proposes a technique to measure a diameter of a sub-micrometer fiber having diameters of less than 1 μm. The proposed technique uses counter-propagating beams as an illumination, which form the standing wave surrounding the fiber. By actively controlling the spatial phase of the standing wave, the scattered light intensity distribution from the fiber is modulated, and the tendency of the modulation depends on the fiber diameter. By analyzing the modulated scattered light intensity distribution, the diameter of the sub-micrometer fiber can be measured. It was experimentally verified that it was possible to measure the diameter of the fiber with a diameter of approximately 500 nm with the proposed measurement method.
ISSN:0007-8506
DOI:10.1016/j.cirp.2022.03.008