Optical properties of a Moiré-lattice photonic crystal fiber with controllable magic angle

Jingmin Zhou; Shuyang Xie; Chen Nie; Piaorong Xu; Jun Yi; Exian Liu

Results in Physics (Aug 2023)

Optical properties of a Moiré-lattice photonic crystal fiber with controllable magic angle

Jingmin Zhou,
Shuyang Xie,
Chen Nie,
Piaorong Xu,
Jun Yi,
Exian Liu

Affiliations

Jingmin Zhou: College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Shuyang Xie: College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Chen Nie: College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Piaorong Xu: College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Jun Yi: College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
Exian Liu: College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Corresponding author.

Journal volume & issue: Vol. 51
p. 106659

Abstract

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Inspired by the unique electrical properties of bilayer-twisted graphene with moiré superlattice, the light manipulation using photonic moiré structures has attracted tremendous research interest. In this paper, the moiré-lattice arrangement is introduced into the cladding of fiber to construct the moiré-lattice photonic crystal fiber (PCF) with two identical triangular-lattice or square-lattice layers of air holes rotated by a certain angle. The optical properties of the moiré-lattice PCF are studied in detail by varying the rotation angle with regards to the dispersion, effective mode field area, nonlinear coefficient and bending loss. Numerical results show that the optical properties of guiding mode can be flexibly regulated and optimized by the rotation angle. Moreover, the fiber can maintain single-mode transmission and low bending loss at different rotation angles. This moiré-lattice PCF provides a new way of regulating the structure for optimizing the fiber properties and offers a guidance for engineering moiré-lattice fiber devices.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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