Silica-based photonic crystal fiber infiltrated with 1,2-dibromoethane for supercontinuum generation

Hieu Le Van; Van Thuy Hoang; Trung Le Canh; Quang Ho Dinh; Hue Thi Nguyen; Hue Thi Nguyen; Ngoc Vo Thi Minh; Mariusz Klimczak; Ryszard Buczynski; Ryszard Buczynski; Rafał Kasztelanic; Rafał Kasztelanic

doi:10.1364/AO.430843

Applied Optics
Vol. 60,
Issue 24,
pp. 7268-7278
(2021)
•https://doi.org/10.1364/AO.430843

Silica-based photonic crystal fiber infiltrated with 1,2-dibromoethane for supercontinuum generation

Hieu Le Van, Van Thuy Hoang, Trung Le Canh, Quang Ho Dinh, Hue Thi Nguyen, Ngoc Vo Thi Minh, Mariusz Klimczak, Ryszard Buczynski, and Rafał Kasztelanic

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Hieu Le Van, Van Thuy Hoang, Trung Le Canh, Quang Ho Dinh, Hue Thi Nguyen, Ngoc Vo Thi Minh, Mariusz Klimczak, Ryszard Buczynski, and Rafał Kasztelanic, "Silica-based photonic crystal fiber infiltrated with 1,2-dibromoethane for supercontinuum generation," Appl. Opt. 60, 7268-7278 (2021)

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- Nonlinear Optics
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About this Article
History
- Original Manuscript: May 11, 2021
- Revised Manuscript: July 16, 2021
- Manuscript Accepted: July 20, 2021
- Published: August 16, 2021

Abstract

This study proposes a photonic crystal fiber (PCF) made of fused silica glass with the core infiltrated with 1,2-dibromoethane (${{\rm{C}}_2}{{\rm{H}}_4}{{\rm{Br}}_2}$) as a new source of supercontinuum light pulses. Due to the modifications of the PCF’s structure geometry, a number of computer simulations investigating their optimized structures has been carried out. This aimed at achieving flat near-zero dispersion and zero dispersion wavelength matching of the pump wavelength for efficient spectral broadening. Based on the obtained results, the structural geometries of two ${{\rm{C}}_2}{{\rm{H}}_4}{{\rm{Br}}_2}$-core PCFs were optimized using numerical modeling for broadband supercontinuum (SC) generation. The first fiber structure with a lattice constant 1.5 µm and filling factor 0.4 has all-normal dispersion profile. The SC with a broadened spectral bandwidth from 0.64 to 1.70 µm is generated by pump pulses centered at a wavelength of 1.03 µm, 120 fs duration, and energy of 1.5 nJ. The second proposed structure—with lattice constant 1.5 µm and filling factor 0.65—has anomalous dispersion for wavelengths longer than 1.03 µm. We obtained high coherence of the SC pulses in the anomalous dispersion range over wavelengths of 0.7–2.4 µm with the same pump pulse as the first fiber and with input energy of 0.09 nJ. These fibers would be interesting candidates for all-fiber SC sources operating with low-energy pump lasers as cost-effective alternatives to glass core fibers.

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Liquid-Core PCFs	Year	Pump Wavelength (µm)	Regime	SC Range (nm)	Refs.
${C S}_{2}$	2006	1.55	Normal	700–2500	[17]
${C S}_{2}$	2016	1.55	Normal	1355–2110	[18]
$C_{7} H_{8}$	2017	1.55	Normal	1100–1750	[19]
$C_{7} H_{8}$	2017	1.55	Anomalous	1000–1750	[19]
${C C l}_{4}$	2018	1.35	Anomalous	800–2200	[20]
		1.55	Normal	1000–2100	[20]
	2019	1.03	Normal	850–1250	[21]
${C H C l}_{3}$	2019	1.03	Normal	600–1260	[22]
${C H C l}_{3}$	2019	1.03	Anomalous	600–1400	[22]
$C_{6} H_{5} {N O}_{2}$	2020	1.03	Normal	700–1700	[23]
		1.56	Normal	800–2100
			Anomalous	1300–2300
$C_{2} {C l}_{4}$	2018	1.92	Anomalous	1100–2400	[24]
		1.03	Normal	700–2400	[25]
	2021	1.56	Normal	800–2000
	2021	1.56	Anomalous	1000–2000

	Sellmeier Coefficients
Materials	$B_{1}$	$C_{1}$ [ $µ m^{2}$ ]	$B_{2}$	$C_{2}$ [ $µ m^{2}$ ]	$B_{3}$	$C_{3}$ [ $µ m^{2}$ ]
Fused silica [19]	0.6694226	$4.4801 \times 1 0^{- 3}$	$0.434584$	$1.3285 \times 1 0^{- 2}$	$0.8716947$	95.341482
$C_{2} H_{4} {B r}_{2}$	1.3163728	0.01616122	0.4013224	142.2298902	-	-

Parameter	$# F_{1}$	$# F_{2}$
Lattice pitch $Λ$ [µm]	1.5	1.5
Filling factor $f = d / Λ$	0.4	0.65
Cladding holes diameter $d$	0.6	0.975
Core diameter $[µ m]$ _[µm]	2.28	1.83

Parameter		$# F_{2}$	$# F_{1}$
Fiber length [cm]		10	15
Coupled peak power [kW]		12.5	0.75
Bandwidth [THz]		176.348–468.426	124.913–428.275
Spectral range [nm]		640–1700	700–2400
$# F_{2}$	Shot noise	high coherence	high coherence
$# F_{2}$	Shot noise $g_{12}^{(1)}$ RIN (0.5%)	moderate coherence	low coherence
$+$		75.79	143
$L_{D}$		0.12	0.14
$L_{N L}$		1.92	2.24
$L_{M I}$		—	4.4
Main physical processes		SPM, MI, OWB, FWM	SPM, solition fission, dispersive waves

Liquid-Core PCFs	Year	Pump Wavelength (µm)	Regime	SC Range (nm)	Refs.
${C S}_{2}$	2006	1.55	Normal	700–2500	[17]
${C S}_{2}$	2016	1.55	Normal	1355–2110	[18]
$C_{7} H_{8}$	2017	1.55	Normal	1100–1750	[19]
$C_{7} H_{8}$	2017	1.55	Anomalous	1000–1750	[19]
${C C l}_{4}$	2018	1.35	Anomalous	800–2200	[20]
		1.55	Normal	1000–2100	[20]
	2019	1.03	Normal	850–1250	[21]
${C H C l}_{3}$	2019	1.03	Normal	600–1260	[22]
${C H C l}_{3}$	2019	1.03	Anomalous	600–1400	[22]
$C_{6} H_{5} {N O}_{2}$	2020	1.03	Normal	700–1700	[23]
		1.56	Normal	800–2100
			Anomalous	1300–2300
$C_{2} {C l}_{4}$	2018	1.92	Anomalous	1100–2400	[24]
		1.03	Normal	700–2400	[25]
	2021	1.56	Normal	800–2000
	2021	1.56	Anomalous	1000–2000

Abstract

Data Availability

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Tables (4)

Equations (9)

Applied Optics