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All Technical Committee Conferences (All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
|
| 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 |
|
| OFT | 2009-01-23 10:15 |
Kochi | Insertion Loss of Hole Assisted Fiber in Mechanical Splice Ryo Koyama, Kotaro Saito, Yoshiteru Abe, Tetsuya Hoshijima, Shigeru Tomita (NTT) OFT2008-82 |
We studied about the requirement to make the insertion loss of a mechanical splice in hole-assisted fibers low as one of... [more] | OFT2008-82 pp.55-58 |
|
| OFT, OCS, ITE-BCT, IEE-CMN (Joint) [detail] |
2008-11-20 09:35 |
Oita | A Study to apply HAF(Hole-Assisted Fiber) for Optical fibre cable joint Shigeru Tomita, Tetsuya Hoshijima, Ryo Koyama, Kotaro Saito, Yoshiteru Abe (NTT), Koji Koseki (EXEO), Keisuke Sato (TTK), Takuya Sekine (Ikeno Tsuken) OFT2008-49 |
[more] | OFT2008-49 pp.15-18 |
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