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Anbazhagan, Rajesh, Chandru, S, Chinthaginjala, Ravikumar, Bagadi, Kalapraveen, Alibakhshikenari, Mohammad, Virdee, Bal Singh, Ali, Syed Mansoor, Dayoub, Iyad, Livreri, Patrizia and Aïssa, Sonia (2023) Structural analysis of Nano Core PCF with fused cladding for supercontinuum generation in 6G networks. Radio Science, 58 (9). pp. 1-18. ISSN 1944-799X
The Sixth Generation (6G) networks have identified the use of frequency range between 95 GHz and 3 THz with a targeted data rate of 1 Terabytes/second at the access network for holographic video applications. As is demands broadening of spectrum at the core network, this paper proposes a Supercontinuum Generation (SCG) through photonic crystal fiber (PCF) as it provides excellent broadening of the optical spectrum. Discussed in the paper is supercontinuum generation at high pumping power as per the standards specified by the International Telecommunications Union. The proposed PCF is designed with silicon nanocrystal core and the cladding microstructures is arranged in a fusion approach to effectively optimize the optical parameters such as dispersion, nonlinearity, birefringence, group-velocity dispersion, and confinement loss. The fused cladding comprises of a flower-cladding assembly in which air-holes arrangement is inspired from petals in a pleated structure. Such arrangement is shown here to provide high nonlinearity and negative dispersion for high power supercontinuum generation. The novel nanocore assembly with improved structural constraints delivers a non-linearity of 6.37×10^6 /W.km and a negative dispersion of −142.1 ps/nm-km at 1,550 nm. Moreover, a supercontinuum spectrum is generated using different pulse widths ranging from 350 to 650 ps with 25 kW pump power for PCF lengths of 10 and 15 mm.
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