A Photonic crystal fiber with large effective refractive index separation and low dispersion

Zhihao Geng, Ning Wang, Keyao Li, Hui Kang, Xun Xu, Xing Liu, Weicheng Wang and Hongzhi Jia

PLOS ONE, 2020, vol. 15, issue 5, 1-15

Abstract: A photonic crystal fiber (PCF) structure with a ring-core and 5 well-ordered semiellipse air-holes has been creatively proposed. Through a comparison between the structures with a high refractive index (RI) ring-core and the structure without, it conclude that a PCF with a high RI ring-core can work better. Schott SF57 was elected as the substrate material of ring-core. This paper compares the effects of long-axis and short-axis changes on the PCF and selects the optimal solution. Especially TE0,1 mode’s dispersion is maintained between 0 and 3 ps / (nm · km) ranging from 1.45 μm to 1.65 μm. This property can be used to generate a supercontinuum with 200 μm long zero dispersion wavelength (ZDM). In addition, Δneff reaches up to 10−3, which enables the near -degeneracy of the eigenmodes to be almost neglected. The proposed PCF structure will have great application value in the field of optical communications.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0232982

DOI: 10.1371/journal.pone.0232982

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