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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Full-vectorial finite element method in a cylindrical coordinate system for loss analysis of photonic wire bends
| Title: | Full-vectorial finite element method in a cylindrical coordinate system for loss analysis of photonic wire bends |
| Authors: | Kakihara, Kuniaki Browse this author | | Kono, Naoya Browse this author | | Saitoh, Kunimasa Browse this author →KAKEN DB | | Koshiba, Masanori Browse this author →KAKEN DB |
| Keywords: | Numerical approximation and analysis | | Integrated optics | | Waveguides |
| Issue Date: | 13-Nov-2006 |
| Publisher: | Optical Society of America |
| Journal Title: | Optics Express |
| Volume: | 14 |
| Issue: | 23 |
| Start Page: | 11128 |
| End Page: | 11141 |
| Abstract: | This paper presents a new full-vectorial finite-element method in a local cylindrical coordinate system, to effectively analyze bending losses in photonic wires. The discretization is performed in the cross section of a three-dimensional curved waveguide, using hybrid edge/nodal elements. The solution region is truncated by anisotropic, perfectly matched layers in the cylindrical coordinate system, to deal properly with leaky modes of the waveguide. This approach is used to evaluate bending losses in silicon wire waveguides. The numerical results of the present approach are compared with results calculated with an equivalent straight waveguide approach and with reported experimental data. These comparisons together demonstrate the validity of the present approach based on the cylindrical coordinate system and also clarifies the limited validity of the equivalent straight waveguide approximation. |
| Rights: | © 2006 Optical Society of America, Inc. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/17019 |
| 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: 柿原 邦昭
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