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Tensile strain dependence of Brillouin frequency shift in silica optical fibers

IEEE Photonics Technology Letters · 1989 · Vol. 1(5) · pp. 107–108

T. Horiguchi✉(NTT (Japan))Takeshi Kurashima(NTT (Japan))Mitsuhiro Tateda(NTT (Japan))

Abstract

Brillouin frequency shift in a single-mode optical fiber has been measured as a function of tensile strain. The strain coefficient of normalized Brillouin frequency shift C identical to (dv/sub B//d epsilon )/v/sub B/ is found to be 4.4 for silica fibers. This result shows the potential of Brillouin spectroscopy to evaluate tensile strain in the fiber with the strain resolution of about 2*10/sup -4/. The origin of the large strain coefficient is discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>

Advanced Fiber Optic Sensors Photonic and Optical Devices Advanced Fiber Laser TechnologiesBrillouin zoneStrain (injury)Materials scienceBrillouin SpectroscopyBrillouin scatteringTensile strainUltimate tensile strengthOptical fiberFiberSpectroscopy

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Brillouin gain spectrum characterization in single-mode optical fibers