Fiber taper diameter characterization using forward Brillouin scattering
P. F. Jarschel, L. S. Magalhaes, I. Aldaya, O. Florez and P. Dainese
ARTIGO
Inglês
Abstract: We propose a fast and non-destructive method to characterize the absolute diameter and uniformity of micrometer-scale fiber tapers using a pump and probe forward Brillouin scattering setup. The fundamental torsional-radial acoustic mode supported by the wire is excited using a pulsed pump...
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Abstract: We propose a fast and non-destructive method to characterize the absolute diameter and uniformity of micrometer-scale fiber tapers using a pump and probe forward Brillouin scattering setup. The fundamental torsional-radial acoustic mode supported by the wire is excited using a pulsed pump laser and oscillates at a frequency that is inversely proportional to the taper waist diameter. This standing time-varying torsional-radial wave induces polarization modulation on a probe signal, whose spectrum structure reveals the sample diameter and its non-uniformity. By comparing our results with measurements using scanning-electron microscopy, a relative deviation of 1% or less was demonstrated, and diameter non-uniformity of less than 0.5% could be detected
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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
574017/2008-9
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
08/57857-2; 2013/20180-3
Fechado
Fiber taper diameter characterization using forward Brillouin scattering
P. F. Jarschel, L. S. Magalhaes, I. Aldaya, O. Florez and P. Dainese
Fiber taper diameter characterization using forward Brillouin scattering
P. F. Jarschel, L. S. Magalhaes, I. Aldaya, O. Florez and P. Dainese
Fontes
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Optics letters Vol. 43, n. 5 (Mar., 2018), p. 995-998 |