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| Presentation | 2015-10-23 10:00 All-Fiber Single-Channel Bandpass Filters Formed by a High Attenuation Fiber Placed between Long-Period Fiber Gratings Fatemeh Abrishamian, Katsumi Morishita (Osaka Eectro-Comm. Univ.)  OFT2015-35 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We proposed and demonstrated all-fiber single-channel bandpass filters that employed a high attenuation metal-doped fiber spliced between two long-period fiber gratings (LPFGs). The grating periods of the LPFGs written in dissimilar fibers were adjusted so as to match the resonance wavelengths of only one pair of the same order cladding modes and also avoid matching those of other pairs. The first LPFG couples the resonant core mode to the cladding mode, and the coupled cladding mode passes through the attenuation fiber with low loss. The second LPFG changes the resonant coupled cladding mode back to the core mode, and a single-channel passband appears. However the non-resonant coupled cladding modes go through the second LPFG, and are absorbed by the coating, and the stopbands are produced. On the other hand, the non-resonant core mode passing through the first LPFG is absorbed by the attenuation fiber, and the stopbands are formed. LPFGs were written in three single-mode fibers with relative index difference of about 2 ~ 2.5, 0.8, and 0.46 %. Their grating periods were adjusted so that the resonance wavelengths of the LP04 modes agreed with each other, and a single-channel bandpass filter was constructed by splicing the two LPFGs and the attenuation fiber. The insertion loss and the full-width at half-maximum bandwidth of the passband were 6.6 dB and 4.7 nm, 6.9 dB and 6.4 nm, and 7.9 dB and 7.1 nm, respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Long-Period Fiber Grating / Single-Channel Bandpass Filter / Attenuation Fiber / Fiber-Based Optical Device / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 262, OFT2015-35, pp. 43-48, Oct. 2015. | |
| Paper # | OFT2015-35 | |
| Date of Issue | 2015-10-15 (OFT) | |
| 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 | OFT2015-35 |
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| Conference Information | |
| Committee | OFT |
| Conference Date | 2015-10-22 - 2015-10-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Mie Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2015-10-OFT |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | All-Fiber Single-Channel Bandpass Filters Formed by a High Attenuation Fiber Placed between Long-Period Fiber Gratings |
| Sub Title (in English) | |
| Keyword(1) | Long-Period Fiber Grating |
| Keyword(2) | Single-Channel Bandpass Filter |
| Keyword(3) | Attenuation Fiber |
| Keyword(4) | Fiber-Based Optical Device |
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| 1st Author's Name | Fatemeh Abrishamian |
| 1st Author's Affiliation | Osaka Electro-Communication University (Osaka Eectro-Comm. Univ.) |
| 2nd Author's Name | Katsumi Morishita |
| 2nd Author's Affiliation | Osaka Electro-Communication University (Osaka Eectro-Comm. Univ.) |
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| Speaker | Author-2 |
| Date Time | 2015-10-23 10:00:00 |
| Presentation Time | 25 minutes |
| Registration for | OFT |
| Paper # | OFT2015-35 |
| Volume (vol) | vol.115 |
| Number (no) | no.262 |
| Page | pp.43-48 |
| #Pages | 6 |
| Date of Issue | 2015-10-15 (OFT) |
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