Highly nonlinear yttrium-aluminosilicate optical fiber with a high intrinsic stimulated Brillouin scattering threshold

M. Tuggle; C. Kucera; T. Hawkins; D. Sligh; A. F. J. Runge; A. C. Peacock; P. Dragic; J. Ballato

doi:10.1364/OL.42.004849

Optics Letters
Vol. 42,
Issue 23,
pp. 4849-4852
(2017)
•https://doi.org/10.1364/OL.42.004849

Highly nonlinear yttrium-aluminosilicate optical fiber with a high intrinsic stimulated Brillouin scattering threshold

M. Tuggle, C. Kucera, T. Hawkins, D. Sligh, A. F. J. Runge, A. C. Peacock, P. Dragic, and J. Ballato

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M. Tuggle, C. Kucera, T. Hawkins, D. Sligh, A. F. J. Runge, A. C. Peacock, P. Dragic, and J. Ballato, "Highly nonlinear yttrium-aluminosilicate optical fiber with a high intrinsic stimulated Brillouin scattering threshold," Opt. Lett. 42, 4849-4852 (2017)

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- Fiber Optics and Optical Communications
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About this Article
History
- Original Manuscript: August 29, 2017
- Revised Manuscript: October 17, 2017
- Manuscript Accepted: October 20, 2017
- Published: November 22, 2017

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Abstract

Highly nonlinear (high-NA small-mode-area) optical fibers also possessing an intrinsically high stimulated Brillouin scattering threshold are described. More specifically, silica clad, yttrium-aluminosilicate core fibers are shown to exhibit an intrinsically low Brillouin gain coefficient between 0.125 and $0.139 \times 10^{- 11} m / W$ and a Brillouin gain linewidth of up to 500 MHz. Losses on the order of 0.7 dB/m were measured, resulting from impurities in the precursor materials. Nonlinear refractive index values are determined to be similar to that of silica, but significant measurement uncertainty is attributed to the need to estimate dispersion curves since their direct measurement could not be made. The interest for highly nonlinear optical fibers with a low intrinsic Brillouin gain coefficient is expected to continue, especially with the growing developments of narrow-linewidth high-energy laser systems.

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Parameter	Fiber 1	Fiber 2
Effective area, $A_{eff}$ ^a ( ${μm}^{2}$ , 1550 nm)	11.2	20.7
$Δ n (\times 10^{- 3})$ at core center	47.3	32.9
${Al}_{2} O_{3}$ (mol. %) at core center	9.16	6.95
$Y_{2} O_{3}$ (mol. %) at core center	1.60	1.23
${Yb}_{2} O_{3}$ (mol. %) at core center	0.21	0.41
${SiO}_{2}$ (mol. %) at core center	89.13	91.41
BGC ( $\times 10^{- 11} m / W$ )	0.125	0.139
$n_{2}$ ^b ( $\times 10^{- 20} m^{2} / W$ )	1.8	2.0
Attenuation (dB/m, 1550 nm)	0.78	0.47
Dispersion^a (ps/nm-km)	$+ 9.0$	−40.1
BFOM (1550 nm)	1.23	1.22

$A_{1}$	$2.4989 \times 10^{- 9}$
$l_{1}^{2}$ ( ${nm}^{2}$ )	52575.7
$A_{2}$	0.14498
$l_{2}^{2}$ ( ${nm}^{2}$ )	17018.5
$A_{3}$	1.58869
$l_{3}^{2}$ ( ${nm}^{2}$ )	11645.0

Parameter	Fiber 1	Fiber 2
Effective area, $A_{eff}$ ^a ( ${μm}^{2}$ , 1550 nm)	11.2	20.7
$Δ n (\times 10^{- 3})$ at core center	47.3	32.9
${Al}_{2} O_{3}$ (mol. %) at core center	9.16	6.95
$Y_{2} O_{3}$ (mol. %) at core center	1.60	1.23
${Yb}_{2} O_{3}$ (mol. %) at core center	0.21	0.41
${SiO}_{2}$ (mol. %) at core center	89.13	91.41
BGC ( $\times 10^{- 11} m / W$ )	0.125	0.139
$n_{2}$ ^b ( $\times 10^{- 20} m^{2} / W$ )	1.8	2.0
Attenuation (dB/m, 1550 nm)	0.78	0.47
Dispersion^a (ps/nm-km)	$+ 9.0$	−40.1
BFOM (1550 nm)	1.23	1.22

$A_{1}$	$2.4989 \times 10^{- 9}$
$l_{1}^{2}$ ( ${nm}^{2}$ )	52575.7
$A_{2}$	0.14498
$l_{2}^{2}$ ( ${nm}^{2}$ )	17018.5
$A_{3}$	1.58869
$l_{3}^{2}$ ( ${nm}^{2}$ )	11645.0

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Optics Letters