Temperature dependence of ytterbium-doped fiber amplifiers

Xiang Peng; Liang Dong

doi:10.1364/JOSAB.25.000126

Journal of the Optical Society of America B
Vol. 25,
Issue 1,
pp. 126-130
(2008)
•https://doi.org/10.1364/JOSAB.25.000126

Temperature dependence of ytterbium-doped fiber amplifiers

Xiang Peng and Liang Dong

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Xiang Peng and Liang Dong, "Temperature dependence of ytterbium-doped fiber amplifiers," J. Opt. Soc. Am. B 25, 126-130 (2008)

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Table of Contents Category
- Fiber Optics and Optical Communications
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About this Article
History
- Original Manuscript: July 27, 2007
- Revised Manuscript: November 1, 2007
- Manuscript Accepted: November 10, 2007
- Published: December 26, 2007

Abstract

We characterized the temperature response of a ytterbium (Yb) system by measuring its temperature-dependent emission and absorption spectra and deriving parameters characterizing transitions among Stark levels by Lorentzian curve fitting. We found that even weak transitions in the Stark levels are distinct enough for this procedure when using a linear combination of measured spectra at $0 ° C$ and $100 ° C$ . A fiber amplifier model was established to determine temperature-dependent performance of Yb-doped fiber amplifiers. We concluded that the temperature dependence of the Yb-doped fiber amplifier is mainly determined by the saturation level $P_{out} ∕ P_{pump}$ , when $P_{out} ∕ P_{pump} > 0.4$ ; the higher the saturation levels, the less temperature dependence. When operating a Yb-doped fiber amplifier at low saturation, the temperature dependence is mainly determined by changes in absorption and emission coefficients at the signal wavelength and is the worst when operating around the short wavelength of $\sim 1020 nm$ .

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	$E_{x a}$ $({cm}^{- 1})$	ν (GHz)	$h ν$ (J)
g	11,689	350,670	$2.32357 \times 10^{- 19}$
f	10,909	327,270	$2.16852 \times 10^{- 19}$
e	10,239	307,170	$2.03533 \times 10^{- 19}$
d	1365	40,950	$2.71338 \times 10^{- 19}$
c	970	29,100	$1.92819 \times 10^{- 20}$
b	492	14,760	$9.78009 \times 10^{- 21}$
a	0	0	0

$g_{x y}$ $({cm}^{- 1})$	λ (nm)	ν (GHz)	$g_{x y}^{0}$ $({cm}^{- 1})$	$Δ ν$ (GHz)
$g_{e a}$	975.72	307,252	0.192159485	920.5
$g_{e b}$	1025.27	292,402	0.043871515	7500
$g_{e c}$	1081.30	277,252	0.012706458	6649.5
$g_{f b}$	976.18	307,107	0.191297102	4501
$g_{f c}$	1040.51	288,122	0.048947606	3173.5
$g_{a e}$	975.84	307,214	0.200149915	1435
$g_{a f}$	916.86	326,977	0.0622078	9912.5
$g_{b e}$	1022.17	293,291	0.032512969	4014
$g_{b f}$	969.67	309,164	0.162469284	7155

	$E_{x a}$ $({cm}^{- 1})$	ν (GHz)	$h ν$ (J)
g	11,689	350,670	$2.32357 \times 10^{- 19}$
f	10,909	327,270	$2.16852 \times 10^{- 19}$
e	10,239	307,170	$2.03533 \times 10^{- 19}$
d	1365	40,950	$2.71338 \times 10^{- 19}$
c	970	29,100	$1.92819 \times 10^{- 20}$
b	492	14,760	$9.78009 \times 10^{- 21}$
a	0	0	0

$g_{x y}$ $({cm}^{- 1})$	λ (nm)	ν (GHz)	$g_{x y}^{0}$ $({cm}^{- 1})$	$Δ ν$ (GHz)
$g_{e a}$	975.72	307,252	0.192159485	920.5
$g_{e b}$	1025.27	292,402	0.043871515	7500
$g_{e c}$	1081.30	277,252	0.012706458	6649.5
$g_{f b}$	976.18	307,107	0.191297102	4501
$g_{f c}$	1040.51	288,122	0.048947606	3173.5
$g_{a e}$	975.84	307,214	0.200149915	1435
$g_{a f}$	916.86	326,977	0.0622078	9912.5
$g_{b e}$	1022.17	293,291	0.032512969	4014
$g_{b f}$	969.67	309,164	0.162469284	7155

Abstract

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Tables (2)

Equations (11)

Journal of the Optical Society of America B