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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OPE, OFT, OCS (Joint) [detail] |
2024-02-22 09:35 |
Okinawa | Nobumoto Ohama Memorial Hall (Primary: On-site, Secondary: Online) |
Study on connection loss of multi-fiber cylindrical ferrule for rotary optical fiber switching Chisato Fukai, Ryo Koyama, Ikutaro Ogushi, Kazunori Katayama (NTT)  OCS2023-81 OPE2023-125 |
It is expected to allocate routes flexibly to meet optical fiber demands in optical access network for 5G and 6G. The op... [more] | OCS2023-81 OPE2023-125 pp.76-81(OCS), pp.96-101(OPE) |
| CAS, CS | 2023-03-02 11:45 |
Fukuoka | Kitakyushu International Conference Center (Primary: On-site, Secondary: Online) |
Study on firmware update in operation, management and maintenance functions for remote operated optical fiber switching node Saki Nozoe, Hiroshi Watanabe, Tomohiro Kawano, Ryo Koyama, Akihiro Kuroda, Kuniaki Terakawa, Ikutaro Ogushi, Kazunori Katayama (NTT) CAS2022-116 CS2022-93 |
Concatenated loop topology has been proposed for future optical-fiber access service such as 5G or beyond 5G networks. T... [more] | CAS2022-116 CS2022-93 pp.119-122 |
| OPE, OFT, OCS (Joint) [detail] |
2022-02-24 16:00 |
Online | Online | A study of optical power measurement using a infrared image sensor for a remote operated optical path switching node Ryo Koyama, Yoshiteru Abe, Kazunori Katayama (NTT) OFT2021-73 OPE2021-53 |
Optical access network is an important infrastructure of 5G mobile service and incoming Beyond 5G mobile service. These ... [more] | OFT2021-73 OPE2021-53 pp.17-22(OFT), pp.21-26(OPE) |
| OFT | 2022-01-20 16:10 |
Online | Online | Remote Operated Optical Fiber Switching Node and Optical Cross-Connect Function on Concatenated Loop Topology Hiroshi Watanabe, Tomohiro Kawano, Chisato Fukai, Ryo Koyama, Kazuhide Nakae, (NTT), Tatsuya Fujimoto (NTT East), Yoshiteru Abe, Kazunori Katayama (NTT) OFT2021-62 |
Due the popularization of future 5G and Beyond 5G, the concatenated loop topology is being studied as way of realizing h... [more] | OFT2021-62 pp.36-41 |
| IN, CCS (Joint) |
2020-08-03 13:25 |
Online | Online | A Study on Recovery from Packet Forwarding Errors Caused by Mutual-Exclusion-free PIT of a Multi-core NDN Router Ryo Koyama (Osaka Univ.), Junji Takemasa (KDDI Research, Inc.), Yuki Koizumi (Osaka Univ.), Atsushi Tagami (KDDI Research, Inc.), Toru Hasegawa (Osaka Univ.) IN2020-14 |
A Named Data Networking (NDN) router stores incoming faces from which Interest packets are received at a Pending Interes... [more] | IN2020-14 pp.31-36 |
| IN | 2020-01-23 16:05 |
Aichi | WINC AICHI | A Design of PIT without Mutual Exclusion for Multi-Threading NDN Stateful Forwarding Yuki Koizumi (Osaka Univ.), Junji Takemasa (KDDI Reserch Inc.), Ryo Koyama (Osaka Univ.), Atsushi Tagami (KDDI Reserch Inc.), Toru Hasegawa (Osaka Univ.) IN2019-70 |
Named data networking (NDN) uses Interest packets to request content and Data packets to convey the content. While Inte... [more] | IN2019-70 pp.31-36 |
| OFT | 2019-10-11 09:35 |
Niigata | Ekimae-Office-Kashikaigishitsu (Niigata) | Investigation into the influence of high-power transmission on fiber withdrawal of optical connector Chisato Fukai, Yoshiteru Abe, Masaaki Takaya, Ryo Koyama, Kazunori Katayama (NTT) OFT2019-32 |
In an optical connector manufactured by fixing silica fiber in a zirconia ferrule with an epoxy adhesive, a change in co... [more] | OFT2019-32 pp.1-6 |
| OFT | 2019-10-11 10:50 |
Niigata | Ekimae-Office-Kashikaigishitsu (Niigata) | A Study on High Precision Multiple-fiber Push-On Connector for Reference Connection Application Ryo Koyama, Yoshiteru Abe, Chisato Fukai, Masaaki Takaya (NTT) OFT2019-35 |
We developed single-mode multi-fiber push-on (MPO) connectors with splice losses below 0.2 dB for reference use in a sta... [more] | OFT2019-35 pp.17-21 |
| OPE, OCS, OFT (Joint) [detail] |
2018-02-16 14:20 |
Okinawa | Okinawa Prefectural Museum | A Study of Fiber Cleaving Technique Breaking Fiber with a Tension Force for a New Single-Fiber Cleaver utilized in Fiber Splicing Ryo Koyama, Chisato Fukai, Masaaki Takaya, Kazunori Katayama (NTT) OFT2017-78 OPE2017-186 |
(Advance abstract in Japanese is available) [more] | OFT2017-78 OPE2017-186 pp.53-56(OFT), pp.91-94(OPE) |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2017-11-24 10:45 |
Osaka | Kansa-Univ. Umeda Campus | Electrically driven multifiber switching technique employing MT ferrule with non-circle guide holes Chisato Fukai, Mitsuru Kihara, Ryo Koyama, Yoshiteru Abe, Masaaki Takaya, Kazunori Katayama (NTT) OFT2017-51 |
We studied multifiber switching technique which used switching connector and electrical driven equipment. The switching ... [more] | OFT2017-51 pp.37-42 |
| OCS, OFT, OPE (Joint) [detail] |
2017-02-17 15:20 |
Osaka | Osaka Prefecture University(I-site Nanba) | Novel equipment for inspecting fiber eccentricities in MT/MPO connector to enable high speed measurement Mitsuru Kihara, Ryo Koyama, Chisato Fukai, Kazunori Katayama, Toshio Kurashima (NTT) OFT2016-55 OPE2016-176 |
To achieve a low-loss multi-fiber connector such as MT or MPO connectors, it is important to inspect fiber eccentricitie... [more] | OFT2016-55 OPE2016-176 pp.53-57(OFT), pp.83-87(OPE) |
| OFT | 2017-01-20 14:35 |
Tokyo | Kikaishinko Kaikan | Investigation into the influence of high power transmission on joints between different types of fibers Chisato Fukai, Ryo Koyama, Yoshiteru Abe, Mitsuru Kihara, Kazunori Katayama (NTT) OFT2016-38 |
Cutoff shifted fiber (CSF) is a low loss and low nonlinear fiber compared with other kinds of fibers. Therefore, it is e... [more] | OFT2016-38 pp.15-20 |
| OFT | 2017-01-20 15:00 |
Tokyo | Kikaishinko Kaikan | Study on high fiber count single-mode optical fiber connector Ryo Koyama, Chisato Fukai, Mitsuru Kihara, Toshio Kurashima (NTT) OFT2016-39 |
According to the increase of optical transmission rate, the usage of single-mode optical fiber is increasing. For the ea... [more] | OFT2016-39 pp.21-24 |
| OFT | 2015-12-11 13:25 |
Tokyo | The University of Electro-Communications (Tokyo) | Investigation into the influence of high power transmission on MPO optical connector joints Chisato Fukai, Kotaro Saito, Ryo Koyama, Mitsuru Kihara, Toshio Kurashima (NTT) OFT2015-46 |
We report the influence of high-power optical transmission on 4-fiber MPO connectors. We investigated the relationship b... [more] | OFT2015-46 pp.5-8 |
| OCS, OFT, IEE-CMN, ITE-BCT (Joint) [detail] |
2015-11-13 13:00 |
Ehime | Matsuyama Civic Center | Investigation into fracture characteristics of optical fibers with various cracks and their inspection method Mitsuru Kihara, Kotaro Saito, Chisato Fukai, Ryo Koyama, Toshio Kurashima (NTT) OFT2015-42 |
The cracks on an optical fiber surface can grow with time and eventually lead to fiber breakage. We have investigated br... [more] | OFT2015-42 pp.49-53 |
| OFT | 2012-01-20 09:25 |
Kagawa | Single-mode Optical Fiber Cleaving Condition for Physical Contact Connection with Cleaved and Unpolished Endface Ryo Koyama, Kazuhide Nakajima, Hisashi Izumita, Toshio Kurashima (NTT) OFT2011-66 |
Physical contact (PC) connection is a butt jointing technique for optical fibers, in which fiber cores are brought into ... [more] | OFT2011-66 pp.51-54 |
|
| OFT, OPE | 2011-03-04 18:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Splice characteristics of hole-assisted fiber Kotaro Saito, Ryo Koyama, Kazuhide Nakajima, Toshio Kurashima (NTT Corp.) OFT2010-79 OPE2010-183 |
We investigate the splice losses characteristics observed in hole-assisted fiber (HAF) intrinsically. We experimentally ... [more] | OFT2010-79 OPE2010-183 pp.83-87 |
| OFT | 2010-10-25 10:55 |
Saitama | Nippon Institute of Technology | A Study on a Splice Method for Coated Optical Fibers Ryo Koyama, Kazuhide Nakajima, Masaaki Takaya, Toshihiko Sekiguchi, Toshio Kurashima (NTT) OFT2010-29 |
In the jointing of coated optical fibers, It needs the alignment error reducing of the fiber core which is come from the... [more] | OFT2010-29 pp.7-10 |
| OFT | 2010-01-21 10:20 |
Okinawa | A Study on Jointing of Coated Optical Fiber Ryo Koyama, Kazuhide Nakajima, Masaaki Takaya, Toshihiko Sekiguchi, Toshio Kurashima (NTT Corp.) OFT2009-62 |
A jointing of coated optical fiber can improve the handling properties. This requires cutting the fiber over its coating... [more] | OFT2009-62 pp.1-4 |
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| OFT | 2009-10-30 09:00 |
Oita | Mechanical splice loss characteristics for hole assisted fiber Kotaro Saito, Ryo Koyama, Yoshiteru Abe, Kazuhide Nakajima, Toshio Kurashima (NTT Corp.) OFT2009-43 |
We studied about the relationship between structural parameters of hole-assisted fiber (HAF) and the condition of mechan... [more] | OFT2009-43 pp.47-50 |
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