Acta Photonica Sinica, Volume. 47, Issue 9, 905002(2018)
Design for the Phase-only FAN-OUT Grating of Orbital Angular Momentum Separation System
Based on the coordinate-transformation Orbital Angular Momentum (OAM) sorting scheme, this paper designs a phase-only FAN-OUT grating using a method based on iterative algorithm to copy beams and improve the resolution of the OAM beams sorting efficiently. This paper establishes a numerical simulation model for high-resolution sorting of OAM beams. Numerical results indicate that the energy in the spot received by the system with phase-only FAN-OUT grating is more concentrate and the minimum reduction of dispersion degree of the OAM spectrum is 0.35, the minimum reduction of the error probability is 15%. The phase-only FAN-OUT grating is advantageous for realizing high-resolution sorting of OAM beams.
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YIN Xiao-li, LIAO Huan-yu, WANG Yong-jun, CHANG Huan, CUI Xiao-zhou, LIN Jiao-ling. Design for the Phase-only FAN-OUT Grating of Orbital Angular Momentum Separation System[J]. Acta Photonica Sinica, 2018, 47(9): 905002
Received: Apr. 16, 2018
Accepted: --
Published Online: Sep. 15, 2018
The Author Email: Xiao-li YIN (yinxl@bupt.edu.cn)