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ID 113378
タイトル別表記
Adaptive Compensation for Angular Deflection of Beams Carrying Orbital Angular Momentum on Mode Sorting
著者
Sakashita, Noriyuki Tokushima University
資料タイプ
学術雑誌論文
抄録
Beams carrying orbital angular momentum (OAM) has attracted attention as a potential candidate to expand the transmission capacity in the optical communication. Mode sorting is an efficient method to demultiplex the OAM multiplexed lightwaves. We have reported the mode sorting performance for OAM beams suffering lateral displacement and angular deflection. It was found that the angular deflection was severe, namely, only 100-μrad deflection deteriorated the performance in terms of crosstalk. Thus, the strict angular alignment would be required in the free-space optical communication using OAM multiplexing. In this paper, we propose an adaptive compensation method based on detection of the angular deflection of beams carrying OAM on mode sorting in order to relax such a strict requirement. Numerical simulation results reveal that the compensation in every 100 μrad effectively suppresses the crosstalk caused by the angular deflection.
掲載誌名
Japanese Journal of Applied Physics
ISSN
13474065
00214922
cat書誌ID
AA12295836
AA11509854
出版者
The Japan Society of Applied Physics
58
SJ
開始ページ
SJJE04
発行日
2019-07-17
権利情報
© 2019 The Japan Society of Applied Physics
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系