Enhanced soliton self-frequency shift and CW supercontinuum generation in GeO<sub>2</sub>-doped core photonic crystal fibers

B. Barviau; O. Vanvincq; A. Mussot; Y. Quiquempois; G. Mélin; A. Kudlinski

doi:10.1364/JOSAB.28.001152

Enhanced soliton self-frequency shift and CW supercontinuum generation in ${GeO}_{2}$ -doped core photonic crystal fibers

B. Barviau, O. Vanvincq, A. Mussot, Y. Quiquempois, G. Mélin, and A. Kudlinski

Journal of the Optical Society of America B
Vol. 28,
Issue 5,
pp. 1152-1160
(2011)
•https://doi.org/10.1364/JOSAB.28.001152

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B. Barviau, O. Vanvincq, A. Mussot, Y. Quiquempois, G. Mélin, and A. Kudlinski, "Enhanced soliton self-frequency shift and CW supercontinuum generation in GeO₂-doped core photonic crystal fibers," J. Opt. Soc. Am. B 28, 1152-1160 (2011)

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Related Topics
Table of Contents Category
- Fiber Optics and Optical Communications
Optics & Photonics Topics
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The topics in this list come from the OSA Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Fiber design and fabrication (060.2280)
- Microstructured fibers (060.4005)
- Photonic crystal fibers (060.5295)
- Nonlinear optics, fibers (190.4370)
- Pulse propagation and temporal solitons (190.5530)

About this Article
History
- Original Manuscript: January 31, 2011
- Revised Manuscript: March 3, 2011
- Manuscript Accepted: March 13, 2011
- Published: April 19, 2011

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Abstract

We investigate the impact of germanium oxide ( ${GeO}_{2}$ ) doping on the linear and nonlinear properties of photonic crystal fibers. We propose some design rules allowing a strong enhancement of the Raman and Kerr nonlinearities with little impact on the fiber dispersive properties. It is experimentally and numerically demonstrated that using ${GeO}_{2}$ -doped core photonic crystal fibers allows a significant enhancement of the soliton self-frequency shift as compared to pure silica photonic crystal fibers with comparable dispersion. We found that the high nonlinear coefficient (due to a good mode confinement) obtained in the ${GeO}_{2}$ -doped core fiber plays a more important role on the soliton self-frequency shift enhancement than the intrinsic Raman gain.

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	Pure Silica	$10 mol . %$	$20 mol . %$
$Λ (μm)$	3.60	3.26	3.05
$d (μm)$	1.80	1.96	2.49
${\bar{n}}_{2}$ at $1064 nm (m^{2} / W)$	$2.5 \times 10^{- 20}$	$2.6 \times 10^{- 20}$	$2.9 \times 10^{- 20}$
$A_{eff}$ at $1064 nm ({μm}^{2})$	15.9	8.8	4.8
γ at $1064 nm (W^{- 1} \cdot {km}^{- 1})$	9.4	17.8	34.8
GVD at $1064 nm (ps / nm / km)$	0.78	0.92	1.16

Case	γ	$f_{R}$ $h_{R} (t)$	$γ (W^{- 1} \cdot {km}^{- 1})$	$f_{R}$	$Δ ν (THz)$
1	${SiO}_{2}$	${SiO}_{2}$	7.4	0.22	$- 26.8$
2	${SiO}_{2}$	${GeO}_{2}$	7.4	0.32	$- 28$
3	${GeO}_{2}$	${SiO}_{2}$	23.8	0.22	$- 53.5$
4	${GeO}_{2}$	${GeO}_{2}$	23.8	0.32	$- 56.6$

	Pure Silica	$10 mol . %$	$20 mol . %$
$Λ (μm)$	3.60	3.26	3.05
$d (μm)$	1.80	1.96	2.49
${\bar{n}}_{2}$ at $1064 nm (m^{2} / W)$	$2.5 \times 10^{- 20}$	$2.6 \times 10^{- 20}$	$2.9 \times 10^{- 20}$
$A_{eff}$ at $1064 nm ({μm}^{2})$	15.9	8.8	4.8
γ at $1064 nm (W^{- 1} \cdot {km}^{- 1})$	9.4	17.8	34.8
GVD at $1064 nm (ps / nm / km)$	0.78	0.92	1.16

Case	γ	$f_{R}$ $h_{R} (t)$	$γ (W^{- 1} \cdot {km}^{- 1})$	$f_{R}$	$Δ ν (THz)$
1	${SiO}_{2}$	${SiO}_{2}$	7.4	0.22	$- 26.8$
2	${SiO}_{2}$	${GeO}_{2}$	7.4	0.32	$- 28$
3	${GeO}_{2}$	${SiO}_{2}$	23.8	0.22	$- 53.5$
4	${GeO}_{2}$	${GeO}_{2}$	23.8	0.32	$- 56.6$

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