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All-in-fiber method of generating orbital angular momentum with helically symmetric fibers

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Abstract

An all-in-fiber method of generating orbital angular momentum (OAM) is proposed. A simple device composed with a section of helically symmetric fiber and another section of regular fiber is designed to convert input light to optical vortices. Finite element method calculation of first- and second-order OAM generation based on the coordinates transformation technique is taken to show that the eigenmodes of the helically symmetric fiber structures carry orbital and spin angular momentum. Simulation using the self-developed beam propagation method algorithm is also performed to verify the orbital angular momentum generation and evaluate the performance of the OAM generator.

© 2018 Optical Society of America

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Corrections

Li Li, Shicheng Zhu, Jinyan Li, Xinyu Shao, Almantas Galvanauskas, and Xiuquan Ma, "All-in-fiber method of generating orbital angular momentum with helically symmetric fibers: publisher’s note," Appl. Opt. 57, 9238-9238 (2018)
https://opg.optica.org/ao/abstract.cfm?uri=ao-57-31-9238

3 October 2018: A typographical correction was made to the Fig. 4 caption.


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Supplementary Material (3)

NameDescription
Visualization 1       This video shows the electric field evolution of LP11 mode in center core. The surface represents the x-components of the electric field of LP11 mode. The rotation of the electric field distribution shows the LP11 mode is carrying orbital angular mome
Visualization 2       This video shows the polarization evolution of LP01 mode in side core of our OAM generator. The background surface shows the intensity distribution of LP01 mode, and the white arrows represent the polarization directions of electric field for LP01 mo
Visualization 3       This video shows the light power of x-components variations along the z direction of OAM generator. Light is launched to the side core of the helically-symmetric fiber initially and we can observe the power distribution is rotating in the center core

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Figures (10)

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Equations (9)

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