Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions
A photonic crystal fiber (PCF) structure with three-zero dispersion wavelengths (ZDWs) and a flat dispersion curve was designed by adjusting the structural parameters (the diameters of small air holes inserted between standard lattices in the first and third rings) and fiber core size to obtain the...
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doaj-50c5b14b534c4e4cb94608f68e76ad8a2021-04-12T04:23:23ZengElsevierResults in Physics2211-37972021-04-0123104033Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regionsYing Huang0Hua Yang1Saili Zhao2Yucheng Mao3Shuyuan Chen4College of Computer Science and Electronic Engineering, Key Laboratory for Micro/Nato Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, People’s Republic of ChinaCollege of Computer Science and Electronic Engineering, Key Laboratory for Micro/Nato Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, People’s Republic of China; Synergetic Innovation Center for Quantum Effects and Application, Hunan Normal University, Changsha 410082, People’s Republic of China; Corresponding author at: College of Computer Science and Electronic Engineering, Key Laboratory for Micro/Nato Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, People’s Republic of China.School of Information Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of ChinaCollege of Computer Science and Electronic Engineering, Key Laboratory for Micro/Nato Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, People’s Republic of ChinaCollege of Computer Science and Electronic Engineering, Key Laboratory for Micro/Nato Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, People’s Republic of ChinaA photonic crystal fiber (PCF) structure with three-zero dispersion wavelengths (ZDWs) and a flat dispersion curve was designed by adjusting the structural parameters (the diameters of small air holes inserted between standard lattices in the first and third rings) and fiber core size to obtain the required shape, number of extreme points and the dynamic range of waveguide dispersion (Dw) curve. A quantitative method which was realized by fixing the positions of the ZDWs and tailoring different dispersion slopes was proposed to design another PCF with the same ZDWs and a slightly larger dispersion slope. Both of the designed PCFs were used for contrast experiments of supercontinuum (SC) generation. The simulation results show that the flat dispersion can produce the coherent SC in both normal and anomalous dispersion regions for the designed two PCFs. The degree of flatness and the wavelength range of coherent SC are determined by the great time-domain compression due to the direct soliton spectrum tunneling (DSST) resulting from the mismatch between self-phase modulation and gradually decreasing dispersion. A wide, flat, and coherent SC with a wavelength range of 1281–2200 nm and power range of −14.8 ~ −9.4 dB was obtained for the PCF with flatter dispersion by pumping in the anomalous dispersion region with 50 fs incident pulse. This study is instructive for PCF design in different application scenarios and finds a new way for the generation of wide flat coherent spectrum.http://www.sciencedirect.com/science/article/pii/S221137972100200XPhotonic crystal fiberThree zero dispersion wavelengthsWaveguide dispersionSupercontinuum generationDirect soliton spectrum tunneling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ying Huang Hua Yang Saili Zhao Yucheng Mao Shuyuan Chen |
spellingShingle |
Ying Huang Hua Yang Saili Zhao Yucheng Mao Shuyuan Chen Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions Results in Physics Photonic crystal fiber Three zero dispersion wavelengths Waveguide dispersion Supercontinuum generation Direct soliton spectrum tunneling |
author_facet |
Ying Huang Hua Yang Saili Zhao Yucheng Mao Shuyuan Chen |
author_sort |
Ying Huang |
title |
Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
title_short |
Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
title_full |
Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
title_fullStr |
Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
title_full_unstemmed |
Design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
title_sort |
design of photonic crystal fibers with flat dispersion and three zero dispersion wavelengths for coherent supercontinuum generation in both normal and anomalous regions |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2021-04-01 |
description |
A photonic crystal fiber (PCF) structure with three-zero dispersion wavelengths (ZDWs) and a flat dispersion curve was designed by adjusting the structural parameters (the diameters of small air holes inserted between standard lattices in the first and third rings) and fiber core size to obtain the required shape, number of extreme points and the dynamic range of waveguide dispersion (Dw) curve. A quantitative method which was realized by fixing the positions of the ZDWs and tailoring different dispersion slopes was proposed to design another PCF with the same ZDWs and a slightly larger dispersion slope. Both of the designed PCFs were used for contrast experiments of supercontinuum (SC) generation. The simulation results show that the flat dispersion can produce the coherent SC in both normal and anomalous dispersion regions for the designed two PCFs. The degree of flatness and the wavelength range of coherent SC are determined by the great time-domain compression due to the direct soliton spectrum tunneling (DSST) resulting from the mismatch between self-phase modulation and gradually decreasing dispersion. A wide, flat, and coherent SC with a wavelength range of 1281–2200 nm and power range of −14.8 ~ −9.4 dB was obtained for the PCF with flatter dispersion by pumping in the anomalous dispersion region with 50 fs incident pulse. This study is instructive for PCF design in different application scenarios and finds a new way for the generation of wide flat coherent spectrum. |
topic |
Photonic crystal fiber Three zero dispersion wavelengths Waveguide dispersion Supercontinuum generation Direct soliton spectrum tunneling |
url |
http://www.sciencedirect.com/science/article/pii/S221137972100200X |
work_keys_str_mv |
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