@inproceedings{9906568729aa4b20a519d0fe1ea6de13,
title = "Modified algorithm for calculating the center position of optical vortices in the space optical communication system",
abstract = "The fine tracking system is important to improve the performance of orbital angular momentum (OAM) space optical communication system. In order to improve the accuracy and stability of the centroid algorithm, this article proposes a modified algorithm to detect the center position of OAM light beam. The modified algorithm firstly takes a binary-conversion with the threshold based on the intensity profile of OAM beam, and then calculates the center position of the light spot using centroid algorithm. The threshold for binary-conversion of Laguerre-Gaussian (LG) beam is obtained by theoretical analysis and numerical calculation. The accuracy, stability and complexity of the modified algorithm are studied by numerical simulation. The results show that the new algorithm, compared with the centroid algorithm, has 2 orders of magnitude higher in computing accuracy and 3∼4 orders of magnitude higher in stability. However, the computing time has increased by about 1.5 times compared with the centroid algorithm.",
keywords = "Binary-conversion, Center position detection, Centroid method, OAM beam",
author = "Xiaoli Yin and Peng Yin and Xiaozhou Cui and Huan Chang and Kaiwen You and Jia Lei",
note = "Publisher Copyright: {\textcopyright} 2017 SPIE.; International Conference on Optoelectronics and Microelectronics Technology and Application 2016, OMTA 2016 ; Conference date: 10-10-2016 Through 12-10-2016",
year = "2017",
doi = "10.1117/12.2264542",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Guofan Jin and Yangyuan Wang",
booktitle = "International Conference on Optoelectronics and Microelectronics Technology and Application",
address = "United States",
}