Kerr nonlinearity and dispersion characterization of core-pumped thulium-doped fiber at 2 μm

Svyatoslav Kharitonov; Adrien Billat; Camille-Sophie Brès

doi:10.1364/OL.41.003173

Optics Letters
Vol. 41,
Issue 14,
pp. 3173-3176
(2016)
•https://doi.org/10.1364/OL.41.003173

Kerr nonlinearity and dispersion characterization of core-pumped thulium-doped fiber at 2 μm

Svyatoslav Kharitonov, Adrien Billat, and Camille-Sophie Brès

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Svyatoslav Kharitonov, Adrien Billat, and Camille-Sophie Brès, "Kerr nonlinearity and dispersion characterization of core-pumped thulium-doped fiber at 2 μm," Opt. Lett. 41, 3173-3176 (2016)

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Abstract

A nonlinear coefficient of $3.6 - 4.1 W^{- 1} {km}^{- 1}$ and group velocity dispersion of $- 20 {ps}^{2} / km$ of a commercial core-pumped thulium-doped fiber have been evaluated using degenerate four-wave mixing at 2 μm. The anomalous dispersion behavior of the fiber has been confirmed by linear measurements with an all-fiber Mach–Zehnder interferometer (MZI). Additionally, no pump-induced dispersion changes due to excitation of ${Tm}^{3 +}$ cations have been detected. These characteristics make these fibers attractive for pulsed fiber laser applications. A nonlinear-polarization rotation mode-locked laser involving nonlinear polarization evolution directly in the doped fiber is demonstrated.

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$λ_{p} (nm)$	$β_{2} ({ps}^{2} \cdot {km}^{- 1})$	$γ (W^{- 1} \cdot {km}^{- 1})$	$α (dB \cdot m^{- 1})$
1980	$- 18.41 \pm 0.38$	$3.87 \pm 0.29$	$0.12 \pm 0.02$
2000	$- 18.94 \pm 0.11$	$3.39 \pm 0.43$	$0.10 \pm 0.04$
2008	$- 19.91 \pm 0.38$	$3.21 \pm 0.49$	$0.07 \pm 0.03$

$λ_{p} (nm)$	$β_{2} ({ps}^{2} \cdot {km}^{- 1})$	$γ (W^{- 1} \cdot {km}^{- 1})$	$α (dB \cdot m^{- 1})$
1980	$- 18.74 \pm 0.39$	$4.09 \pm 0.41$	$0.12 \pm 0.02$
2000	$- 19.81 \pm 0.14$	$3.80 \pm 0.15$	$0.07 \pm 0.03$
2008	$- 20.49 \pm 0.36$	$3.57 \pm 0.33$	$0.06 \pm 0.01$

$λ_{p} (nm)$	$β_{2} ({ps}^{2} \cdot {km}^{- 1})$	$γ (W^{- 1} \cdot {km}^{- 1})$	$α (dB \cdot m^{- 1})$
1980	$- 18.41 \pm 0.38$	$3.87 \pm 0.29$	$0.12 \pm 0.02$
2000	$- 18.94 \pm 0.11$	$3.39 \pm 0.43$	$0.10 \pm 0.04$
2008	$- 19.91 \pm 0.38$	$3.21 \pm 0.49$	$0.07 \pm 0.03$

$λ_{p} (nm)$	$β_{2} ({ps}^{2} \cdot {km}^{- 1})$	$γ (W^{- 1} \cdot {km}^{- 1})$	$α (dB \cdot m^{- 1})$
1980	$- 18.74 \pm 0.39$	$4.09 \pm 0.41$	$0.12 \pm 0.02$
2000	$- 19.81 \pm 0.14$	$3.80 \pm 0.15$	$0.07 \pm 0.03$
2008	$- 20.49 \pm 0.36$	$3.57 \pm 0.33$	$0.06 \pm 0.01$

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Optics Letters