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Wavefront superposition method for accurate and efficient mode conversion

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/79207

Title: Wavefront superposition method for accurate and efficient mode conversion
Authors: Maeda, Tomohiro Browse this author
Okamoto, Atsushi Browse this author →KAKEN DB
Ogawa, Kazuhisa Browse this author
Tomita, Akihisa Browse this author →KAKEN DB
Issue Date: 1-Sep-2019
Publisher: Optical Society of America
Journal Title: Applied optics
Volume: 58
Issue: 25
Start Page: 6899
End Page: 6905
Publisher DOI: 10.1364/AO.58.006899
Abstract: A wavefront superposition (WS) method is proposed for accurate and efficient mode conversion in mode-division multiplexing transmission. The WS method converts an input beam to the WS state, which is composed of the conversion target and radiation modes of a few-mode fiber. The appropriate weighting for the modal component of the WS state enables more efficient conversion than the conventional method in which the output beam consists only of the conversion target. Further, since the components of the radiation modes in the output are eliminated by the mode-filtering property of the few-mode fiber, no modal crosstalk occurs in the WS method. We examine the conversion performance of the WS method by a numerical simulation for the mode-multiplexing numbers 3, 6, 10, and 15. The WS method shows a 2.4 dB higher efficiency than the conventional method, while maintaining an extremely low modal crosstalk (less than -80 dB), even when the number of multiplexed modes is 15. (C) 2019 Optical Society of America
Rights: © 2019 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Type: article (author version)
URI: http://hdl.handle.net/2115/79207
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 富田 章久

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