Interferometric assessment of induced nonlinear susceptibility in perturbed single-mode optical fiber for all-optical switching

Fouad El-Diasty

doi:10.1117/1.OE.51.1.015007

31 January 2012 Interferometric assessment of induced nonlinear susceptibility in perturbed single-mode optical fiber for all-optical switching

Fouad El-Diasty

Author Affiliations +

Optical Engineering, Vol. 51, Issue 1, 015007 (January 2012). https://doi.org/10.1117/1.OE.51.1.015007

Abstract

The induced variations of complex third-order susceptibilities in bent single-mode fiber at the standard operating wavelengths, 1300 and 1550 nm, is studied using Fizeau interferometry for radius of curvature ranges from 5 to 11 mm. At λ = 1300 nm and at the minimum radius of curvature R = 5 mm, the cladding real (dispersive) third-order susceptibility Re|χ⁽³⁾| = 1.167×10⁻¹⁵±0.8% electrostatic unit (esu) on the tensile side, whereas on the compressed side it is 1.309×10−15 esu. On the tensile side, the cladding imaginary (absorptive) third-order susceptibility Im|χ⁽³⁾| = 2.089×10⁻¹⁸±0.8% esu, whereas on the compressed side it is 2.118×10^-18esu. For λ = 1550 nm, the cladding Re|χ⁽³⁾| and Im|χ⁽³⁾| on the tensile side are 1.116×10^-15esu and 2.478×10^-18esu, whereas on the compressed cladding side they are 1.259×10^-15esu and 2.514×10^-18esu, respectively. At λ = 1300 nm and R = 5 mm, the core Re|χ⁽³⁾| is given by 1.318×10^-15esu on the tensile side and 1.324×10^-15 esu on the compressed side. The asymmetry in Im|χ⁽³⁾| is given by 4.687×10^-17 esu on the tensile side and by 4.89×10^-17esu on the compressed side. With λ = 1550 nm, the core Re|χ⁽³⁾| asymmetry is given by 1.267×10-15 esu on the tensile side and by 1.272×10^-15esu on the compressed side. For Im|χ⁽³⁾| its core asymmetry is provided by 5.561×10^-17esu on the tensile side and by 5.564×10^-17esu on the compressed side. The observed asymmetry in the measured complex third-order susceptibility components for bent fibers is attributed to the nonlinear response of Young's modulus of fiber material.

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Fouad El-Diasty "Interferometric assessment of induced nonlinear susceptibility in perturbed single-mode optical fiber for all-optical switching," Optical Engineering 51(1), 015007 (31 January 2012). https://doi.org/10.1117/1.OE.51.1.015007

Published: 31 January 2012

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