| Full text | |
| Author(s): |
Total Authors: 5
|
| Affiliation: | [1] Univ Estadual Campinas, Gleb Wataghin Phys Inst, BR-13083859 Campinas, SP - Brazil
[2] Sao Paulo State Univ, Campus Sao Joao Da Boa Vista, BR-13876750 Sao Joao Da Boa Vista - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | OPTICS LETTERS; v. 43, n. 5, p. 995-998, MAR 1 2018. |
| Web of Science Citations: | 7 |
| 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. (C) 2018 Optical Society of America (AU) | |
| FAPESP's process: | 08/57857-2 - Photonics for optical communications |
| Grantee: | Hugo Luis Fragnito |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/20180-3 - Light scattering processes in photonic microstructures |
| Grantee: | Paulo Clóvis Dainese Júnior |
| Support Opportunities: | Research Grants - Young Investigators Grants |