Abstract
A novel approach for measuring the nonlinear refractive index of an optical fiber utlizing the bistable behavior of the double coupling optical fiber ring resonator was proposed and investigated. The switch-off or switch-on power decreases with an increase in the nonlinear refractive index n 2 (m2/W), and the dependence of swith-off or switch-on power on the nonlinear refractive index was analyzed numerically. Simulation results showed that the switch-off power and switch-on power (in dBW) decreased linearly with log10(n 2) in a 100-m-length fiber ring resonator, when n 2 changed from 3.2 × 10−20 m2/W to 2.5 × 10−17 m2/W or nearly n 2 = 3.2 × 10−20 m2/W. These mean that high accuracy as well as large-scale nonlinear refractive index measurement can be achieved by the proposed approach.
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Yang, L., Pan, W., Luo, B. et al. Nonlinear refractive index measurement utilizing bistable behavior of double coupling optical fiber ring resonator. Photonic Sens 5, 79–83 (2015). https://doi.org/10.1007/s13320-014-0228-6
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DOI: https://doi.org/10.1007/s13320-014-0228-6