Numerical simulation of three-core photonic crystal fiber with large group-velocity dispersion

The three-core photonic crystal fiber (TC-PCF) is proposed to obtain large group-velocity dispersion (GVD) because of the coupling effects between the fundamental modes (FMs) of the central core and higher-order modes (HOMs) of the two side cores. The supermodes of the TC-PCF can provide concave ano...

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Bibliographic Details
Published in:IEEE access 2020-01, Vol.8, p.1-1
Main Authors: Yang, Jian Fang, Wang, Chun Can, Jia, Cai Ping, Wang, Mu Guang
Format: Article
Language:English
Subjects:
Couplings
Crystal fibers
Fiber nonlinear optics
Frequency modulation
Optical fiber dispersion
Optical fibers
optical pulse compression
Photonic crystals
Pulse compression
Refractive index
Segments
Short fibers
Silicon compounds
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Summary:The three-core photonic crystal fiber (TC-PCF) is proposed to obtain large group-velocity dispersion (GVD) because of the coupling effects between the fundamental modes (FMs) of the central core and higher-order modes (HOMs) of the two side cores. The supermodes of the TC-PCF can provide concave anomalous- and normal-GVD profiles with large peak values at the maximum dispersion wavelengths (MDWs), which can be shifted in three wavelength windows of 1030 nm, 1550 nm and 1900 nm by properly tuning the refractive indexes of the cores or the air-hole diameters. Furthermore, the numerical results show that two segments of the TC-PCFs with large anomalous GVDs and opposite values of the third-order dispersion (TOD) can provide much higher efficiency of pulse compression than one segment of the TC-PCF. Additionally, the TC-PCFs with large normal GVDs can be used to stretch pulses due to their low nonlinearities and short fiber lengths.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2985507