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Hokkaido University Collection of Scholarly and Academic Papers >
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Spatial mode demultiplexing technique using angularly multiplexed volume holograms with a phase plate
| Title: | Spatial mode demultiplexing technique using angularly multiplexed volume holograms with a phase plate |
| Authors: | Shimizu, Shimpei Browse this author | | Okamoto, Atsushi Browse this author →KAKEN DB | | Mizukawa, Fumiya Browse this author | | Ogawa, Kazuhisa Browse this author | | Tomita, Akihisa Browse this author →KAKEN DB | | Takahata, Taketoshi Browse this author | | Shinada, Satoshi Browse this author | | Wada, Naoya Browse this author |
| Issue Date: | Sep-2017 |
| Publisher: | IOP Publishing |
| Journal Title: | Japanese Journal of Applied Physics (JJAP) |
| Volume: | 56 |
| Issue: | 9 |
| Start Page: | 09NA05 |
| Publisher DOI: | 10.7567/JJAP.56.09NA05 |
| Abstract: | In this paper, we propose a spatial mode demultiplexing technique that uses a volume holographic demultiplexer (VHDM) with a phase plate. The VHDM can separate the multiplexed spatial modes with a single device by using angularly multiplexed volume holograms. In the VHDM, modal cross-talks, which are called inter-page cross-talks in the holographic data storages, are generated, and hence the separation performance of the VHDM is degraded by the intensity overlap between spatial modes. Therefore, we propose a novel scheme wherein phase modulation with a phase plate is added to the conventional scheme. The proposed scheme can achieve high separation performance by modulating the phase of spatial modes to reduce the intensity overlap. In this study, we demonstrated the basic operation of the proposed method for a specific linearly polarized mode group. The separation performance of the VHDM was observed to be markedly improved by the proposed method. (C) 2017 The Japan Society of Applied Physics |
| Rights: | ©2017 The Japan Society of Applied Physics |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/71407 |
| 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)
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Submitter: 清水 新平
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