6533b835fe1ef96bd129f4fb
RESEARCH PRODUCT
High accuracy measurement of Poisson's ratio of optical fibers and its temperature dependence using forward-stimulated Brillouin scattering
L. A. SánchezAntonio DiezJose Luis CruzMiguel V. Andréssubject
Materials scienceOptical fiberbusiness.industryPhysics::Optics02 engineering and technologyÒptica021001 nanoscience & nanotechnology01 natural sciencesAtomic and Molecular Physics and OpticsPoisson's ratiolaw.invention010309 opticssymbols.namesakeOpticsBrillouin scatteringlaw0103 physical sciencessymbols0210 nano-technologybusinessdescription
Transverse acoustic mode resonances enable a high accuracy determination of Poisson’s ratio and elastic properties of optical fibers. An all-optical pump and probe technique is used for efficient excitation and accurate characterization of both, radial and torsional-radial acoustic resonances of optical fibers. Simple and precise algebraic expressions for the frequencies of high order acoustic resonances are derived, enabling a rigorous analysis of the experimental data using standard least squares fitting. Following this approach, the determination of Poisson’s ratio does not require the measurement of any physical length, but only frequency measurements are required. An accuracy better than 1 ‰ is achieved. The dependence of the fiber Poisson’s ratio with temperature is also determined experimentally.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 |