Maxwell’s fisheye lens as efficient power coupler between dissimilar photonic crystal waveguides

The imaging properties of the Maxwell’s fisheye (MFE) lens makes it a viable candidate to implement power coupling between different types of waveguides. A coupler based on the MFE lens is designed to couple a square lattice photonic crystal to a triangular lattice one. The MFE lens is implemented a...

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Bibliographic Details
Published in:Optik (Stuttgart) 2019-05, Vol.185, p.566-570
Main Authors: Badri, S. Hadi, Gilarlue, M.M.
Format: Article
Language:English
Subjects:
Effective medium theory
Maxwell’s fish-eye lens
Metamaterials
Photonic crystal
Power coupler
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Summary:The imaging properties of the Maxwell’s fisheye (MFE) lens makes it a viable candidate to implement power coupling between different types of waveguides. A coupler based on the MFE lens is designed to couple a square lattice photonic crystal to a triangular lattice one. The MFE lens is implemented as ring-based multilayer and graded photonic crystal (GPC) structures. The performance of the ring-based MFE lens is better than the GPC-based one in the C-band of optical communication. The proposed ring-based MFE coupler has a footprint of 3.62×3.62μm and covers the entire C and U bands. The S and L bands are partially covered. The average insertion loss of 0.1dB and the maximum return loss of -11dB in the C-band is achieved.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2019.03.163