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| Presentation | 2008-03-07 13:00 Structural optimization of air-guiding photonic bandgap fibers for realizing ultimate low-loss waveguides Tadashi Murao, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.)  OFT2007-66 OPE2007-185 Link to ES Tech. Rep. Archives: OPE2007-185 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The existence of surface modes is the main drawback and the reduction of the fiber losses is not sufficient in 6-fold symmetry air-guiding photonic bandgap fibers (PBGFs). We show that the surface mode free condition is expressed as a normalized silica-ring thickness T = 0.5 for any core size and the cladding structural parameters, regardless the core radius of the silica-ring is one of the main factors of dominating the surface mode’s condition, and the fact that the wavelength range of the photonic bandgap (PBG) changes on varying the structural parameters of the cladding. Moreover, we propose a novel type of PBGF, namely 3-fold symmetry 27 cell-core PBGF without surface mode, which exhibits lower scattering losses caused by surface roughness of the silica-ring in comparison to 6-fold symmetry 19 cell-core PBGFs and suppresses the mode coupling between fundamental-like and higher-order modes when compared to 6-fold symmetry 37 cell-core PBGFs. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | photonic bandgap fiber / photonic crystal fiber / air core / surface mode / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 513, OFT2007-66, pp. 21-26, March 2008. | |
| Paper # | OFT2007-66 | |
| Date of Issue | 2008-02-29 (OFT, OPE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | OFT2007-66 OPE2007-185 Link to ES Tech. Rep. Archives: OPE2007-185 |
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| Conference Information | |
| Committee | OPE OFT |
| Conference Date | 2008-03-07 - 2008-03-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2008-03-OPE-OFT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Structural optimization of air-guiding photonic bandgap fibers for realizing ultimate low-loss waveguides |
| Sub Title (in English) | |
| Keyword(1) | photonic bandgap fiber |
| Keyword(2) | photonic crystal fiber |
| Keyword(3) | air core |
| Keyword(4) | surface mode |
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| 1st Author's Name | Tadashi Murao |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Kunimasa Saitoh |
| 2nd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 3rd Author's Name | Masanori Koshiba |
| 3rd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-03-07 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | OFT |
| Paper # | OFT2007-66, OPE2007-185 |
| Volume (vol) | vol.107 |
| Number (no) | no.513(OFT), no.514(OPE) |
| Page | pp.21-26 |
| #Pages | 6 |
| Date of Issue | 2008-02-29 (OFT, OPE) |
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