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Effects of Temperature and Axial Strain on Four-Wave Mixing Parametric Frequencies in Microstructured Optical Fibers Pumped in the Normal Dispersion Regime

Departamento de Física Aplicada y Electromagnetismo-ICMUV, Universidad de Valencia, c/ Dr. Moliner 50, Burjassot 46100, Spain
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Photonics 2014, 1(4), 404-411; https://doi.org/10.3390/photonics1040404
Received: 30 September 2014 / Revised: 16 October 2014 / Accepted: 17 October 2014 / Published: 29 October 2014
(This article belongs to the Special Issue Nonlinear Fiber Optics)
A study of the effect of temperature and axial strain on the parametric wavelengths produced by four-wave mixing in microstructured optical fibers is presented. Degenerate four-wave mixing was generated in the fibers by pumping at normal dispersion, near the zero-dispersion wavelength, causing the appearance of two widely-spaced four-wave mixing spectral bands. Temperature changes, and/or axial strain applied to the fiber, affects the dispersion characteristics of the fiber, which can result in the shift of the parametric wavelengths. We show that the increase of temperature causes the signal and idler wavelengths to shift linearly towards shorter and longer wavelengths, respectively. For the specific fiber of the experiment, the band shift at rates ­–0.04 nm/ºC and 0.3 nm/ºC, respectively. Strain causes the parametric bands to shift in the opposite way. The signal band shifted 2.8 nm/me and the idler -5.4 nm/me. Experimental observations are backed by numerical simulations. View Full-Text
Keywords: microstructured optical fibers; four-wave mixing; strain; temperature microstructured optical fibers; four-wave mixing; strain; temperature
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Abreu-Afonso, J.; Díez, A.; Cruz, J.L.; Andrés, M.V. Effects of Temperature and Axial Strain on Four-Wave Mixing Parametric Frequencies in Microstructured Optical Fibers Pumped in the Normal Dispersion Regime. Photonics 2014, 1, 404-411.

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