Design and fabrication of diffractive optics for orbital angular momentum space division multiplexing

Kaitlyn S. Morgan; Indumathi S. Raghu; Eric G. Johnson

doi:10.1117/12.2079944

13 March 2015 Design and fabrication of diffractive optics for orbital angular momentum space division multiplexing

Kaitlyn S. Morgan, Indumathi S. Raghu, Eric G. Johnson

Proceedings Volume 9374, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VIII; 93740Y (2015) https://doi.org/10.1117/12.2079944
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

This work presents the design and fabrication of diffractive optical elements for use in optical communication systems. The device geometry uses a vortex pattern to impart orbital angular momentum (OAM) onto an incident beam, providing a robust method for transmitting information through free space. Two refractive elements were designed and fabricated to use log-polar coordinate transformation of an incident OAM beam at 1550 nm for communications systems. Furthermore, diffractive elements were designed based on the phase profile of this refractive element. Fabrication of the devices uses conventional photolithography on a fused silica substrate.

Citation Download Citation

Kaitlyn S. Morgan, Indumathi S. Raghu, and Eric G. Johnson "Design and fabrication of diffractive optics for orbital angular momentum space division multiplexing", Proc. SPIE 9374, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VIII, 93740Y (13 March 2015); https://doi.org/10.1117/12.2079944

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