Midinfrared supercontinuum generation via As<sub>2</sub>Se<sub>3</sub> chalcogenide photonic crystal fibers

Hamed Saghaei; Majid Ebnali-Heidari; Mohammad Kazem Moravvej-Farshi

doi:10.1364/AO.54.002072

Applied Optics
Vol. 54,
Issue 8,
pp. 2072-2079
(2015)
•https://doi.org/10.1364/AO.54.002072

Midinfrared supercontinuum generation via As₂Se₃ chalcogenide photonic crystal fibers

Hamed Saghaei, Majid Ebnali-Heidari, and Mohammad Kazem Moravvej-Farshi

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Hamed Saghaei, Majid Ebnali-Heidari, and Mohammad Kazem Moravvej-Farshi, "Midinfrared supercontinuum generation via As₂Se₃ chalcogenide photonic crystal fibers," Appl. Opt. 54, 2072-2079 (2015)

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- Fiber Optics and Optical Communications
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About this Article
History
- Original Manuscript: October 9, 2014
- Revised Manuscript: January 9, 2015
- Manuscript Accepted: January 20, 2015
- Published: March 9, 2015

Abstract

Using numerical analysis, we compare the results of optofluidic and rod filling techniques for the broadening of supercontinuum spectra generated by ${As}_{2} {Se}_{3}$ chalcogenide photonic crystal fibers (PCFs). The numerical results show that when air-holes constituting the innermost ring in a PCF made of ${As}_{2} {Se}_{3}$ -based chalcogenide glass are filled with rods of ${As}_{2} S_{3}$ -based chalcogenide glass, over a wide range of mid-IR wavelengths, an ultra-flattened near-zero dispersion can be obtained, while the total loss is negligible and the PCF nonlinearity is very high. The simulations also show that when a 50 fs input optical pulse of 10 kW peak power and center wavelength of 4.6 μm is launched into a 50 mm long rod-filled chalcogenide PCF, a ripple-free spectral broadening as wide as 3.86 μm can be obtained.

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Material	$A_{1}$	$A_{2}$	$A_{3}$	$B_{1}$ ( ${μm}^{2}$ )	$B_{2}$ ( ${μm}^{2}$ )	$B_{3}$ ( ${μm}^{2}$ )
${As}_{2} {Se}_{3}$	4.994	0.120	1.710	0.0583	361	0.2332
${As}_{2} S_{3}$	1.8983	1.9222	0.8765	0.0225	0.0625	0.1225

$β_{n}$ ( $s^{n} / m$ )	Fiber A ( $λ = 3.6 μm$ )	Fiber B ( $λ = 4 μm$ )	Fiber C ( $λ = 4 μm$ )	Fiber D ( $λ = 4.6 μm$ )
$β_{2}$	$9 \times 10^{- 26}$	$1.99 \times 10^{- 26}$	$1.16 \times 10^{- 26}$	$1.14 \times 10^{- 26}$
$β_{3}$	$2.33 \times 10^{- 39}$	$2.64 \times 10^{- 39}$	$2.57 \times 10^{- 39}$	$1.96 \times 10^{- 39}$
$β_{4}$	$- 1.07 \times 10^{- 53}$	$- 1.44 \times 10^{- 53}$	$- 1.28 \times 10^{- 53}$	$- 4.55 \times 10^{- 54}$
$β_{5}$	$9.95 \times 10^{- 68}$	$1.41 \times 10^{- 67}$	$1.17 \times 10^{- 67}$	$- 1.52 \times 10^{- 68}$
$β_{6}$	$- 1.06 \times 10^{- 81}$	$- 1.64 \times 10^{- 81}$	$- 1.2 \times 10^{- 81}$	$1.09 \times 10^{- 81}$
$β_{7}$	$1.37 \times 10^{- 95}$	$2.57 \times 10^{- 95}$	$1.67 \times 10^{- 95}$	$- 2.66 \times 10^{- 95}$
$β_{8}$	$- 1.77 \times 10^{- 109}$	$- 5 \times 10^{- 109}$	$- 3.2 \times 10^{- 109}$	$4.56 \times 10^{- 109}$

	Supercontinuum Bandwidth (μm) Measured at $- 30 dB$
Fiber Length (mm)	Fiber A (3.6 μm)	Fiber B (4 μm)	Fiber C (4 μm)	Fiber D (4.6 μm)
10	2.2	2.01	2.1	2.23
20	1.85	2.23	2.55	3.25
30	1.75	2.61	2.67	3.67
40	1.71	2.75	2.86	3.76
50	1.9	2.83	2.91	3.86

Material	$A_{1}$	$A_{2}$	$A_{3}$	$B_{1}$ ( ${μm}^{2}$ )	$B_{2}$ ( ${μm}^{2}$ )	$B_{3}$ ( ${μm}^{2}$ )
${As}_{2} {Se}_{3}$	4.994	0.120	1.710	0.0583	361	0.2332
${As}_{2} S_{3}$	1.8983	1.9222	0.8765	0.0225	0.0625	0.1225

$β_{n}$ ( $s^{n} / m$ )	Fiber A ( $λ = 3.6 μm$ )	Fiber B ( $λ = 4 μm$ )	Fiber C ( $λ = 4 μm$ )	Fiber D ( $λ = 4.6 μm$ )
$β_{2}$	$9 \times 10^{- 26}$	$1.99 \times 10^{- 26}$	$1.16 \times 10^{- 26}$	$1.14 \times 10^{- 26}$
$β_{3}$	$2.33 \times 10^{- 39}$	$2.64 \times 10^{- 39}$	$2.57 \times 10^{- 39}$	$1.96 \times 10^{- 39}$
$β_{4}$	$- 1.07 \times 10^{- 53}$	$- 1.44 \times 10^{- 53}$	$- 1.28 \times 10^{- 53}$	$- 4.55 \times 10^{- 54}$
$β_{5}$	$9.95 \times 10^{- 68}$	$1.41 \times 10^{- 67}$	$1.17 \times 10^{- 67}$	$- 1.52 \times 10^{- 68}$
$β_{6}$	$- 1.06 \times 10^{- 81}$	$- 1.64 \times 10^{- 81}$	$- 1.2 \times 10^{- 81}$	$1.09 \times 10^{- 81}$
$β_{7}$	$1.37 \times 10^{- 95}$	$2.57 \times 10^{- 95}$	$1.67 \times 10^{- 95}$	$- 2.66 \times 10^{- 95}$
$β_{8}$	$- 1.77 \times 10^{- 109}$	$- 5 \times 10^{- 109}$	$- 3.2 \times 10^{- 109}$	$4.56 \times 10^{- 109}$

Abstract

Supplementary Material (6)

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Equations (10)

Applied Optics