IEICE Technical Committee Submission System
Conference Schedule
Online Proceedings
[Sign in]
Tech. Rep. Archives
    [Japanese] / [English] 
( Committee/Place/Topics  ) --Press->
( Paper Keywords:  /  Column:Title Auth. Affi. Abst. Keyword ) --Press->

All Technical Committee Conferences  (Searched in: All Years)

Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 31  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OFT, ITE-BCT, OCS, IEE-CMN [detail] 2020-11-13
Online Online Commercialization of Coded PSP-BOTDR capable of centimeter spatial resolution in single end style
Kinzo Kishida, Kenichi Nishiguchi, Artur Guzik, Li Ttken (Neubrex), Tsuneo Horiguchi (SIT), Yahei Koyamada (Ibaraki Univ.) OFT2020-42
(Advance abstract in Japanese is available) [more] OFT2020-42
(Joint) [detail]
Okinawa Okinawa Univ. Numerical simulation on fiber-optic distributed dynamic-strain sensing with coherent OTDR
Yahei Koyamada, Mitsuharu Shiwa (NIMS), Kinzo Kishida (Neubrex) OFT2015-58 OPE2015-218
To investigate a potential application of the coherent OTDR in the field of measuring distributed dynamic strain or dete... [more] OFT2015-58 OPE2015-218
OFT 2013-10-25
Nara   Numerical and Experimental Analysis of Trench-Assisted Bend Insensitive Multimode Fibers
Takamitsu Aiba (Ibaraki Univ.), Tomohiro Wakabayashi (Yazaki), Masatoshi Tanaka (Mitsubishi Cable), Yahei Koyamada (Ibaraki Univ.) OFT2013-34
The recently development of trench-assisted bend-insensitive multimode fibers (BI-MMFs) with high bandwidth and low macr... [more] OFT2013-34
OFT 2013-01-24
Tokushima   Improvement of receiver sensitivity and elongation of measurement range in double-pulse BOTDR
Masahiro Kumoda, Yusuke Anzai, Satoshi Matsuura, Yahei Koyamada (Ibaraki Univ.) OFT2012-55
The receiver sensitivity of the double-pulse BOTDR was improved by 7 dB by shifting frequency band for the Brillouin sca... [more] OFT2012-55
OFT 2013-01-24
Tokushima   Numerical simulation of fiber-optic distributed temperature measurement
Masahiro Miyamoto, Taku Itou, Shigeki Takeda, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.) OFT2012-56
Numerical simulations were conducted to investigate the ability of a sensing system based on a coherent OTDR with a prec... [more] OFT2012-56
OFT 2013-01-24
Tokushima   Measurement range enlargement in fiber-optic distributed strain and temperature sensing by coherent OTDR
Akio Togo, Tomoaki Sudo, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.), Li Che-Hsien, Kinzo Kishida (Neubrex) OFT2012-57
We extended measurand range of a coherent OTDR by introducing a fully tunable DFB laser whose optical frequency can be p... [more] OFT2012-57
Hokkaido   Fiber-Optic Distributed Temperature Measurement With Very High Resolution Over Long Range Based on Rayleigh Backscatter Traces Obtained With Coherent OTDR
Akio Togo, Yuta Iitsuka, Ryosuke Shimano, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.) OFT2011-25
Experiments and numerical simulations were conducted to find a possible performance of a technique for measuring distrib... [more] OFT2011-25
Hokkaido   Distributed vibration ditection with very high sensitivity using coherent OTDR
Yuta Iitsuka, Akio Togo, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.) OFT2011-26
This paper presents some experimental results on the distributed vibration detection along a fiber based on the Rayleigh... [more] OFT2011-26
OFT 2010-10-25
Saitama Nippon Institute of Technology Numerical analysis of light transmission in bent trench optical fiber
Yasunori Morikawa, Yahei Koyamada (Ibaraki Univ.) OFT2010-35
This paper presents a numerical analysis of bent trench single-mode fibers (TSMF) which have been developed as bend inse... [more] OFT2010-35
OFT 2009-10-29
Oita   Gigabit Transmission Characteristics with Step-Index Hard Polymer Cladding Fiber Cord
Takamitsu Aiba, Tomohiro Wakabayashi, Shin-ichi Furukawa (YAZAKI), Yahei Koyamada (Ibaraki Univ.) OFT2009-35
We evaluated transmission characteristics of a step-index hard polymer cladding fiber (SI-HPCF) cord witch has high fl... [more] OFT2009-35
MW 2009-06-30
Aichi Nagoya Institute of Technology Microwave phase accuracy of optically controlled phase shifter for array antenna
Kenichi Yamaguchi, Daiki Takeuchi, Wataru Chujo (Meijo Univ.), Shinichi Yamamoto (NICT), Yahei Koyamada (Ibaraki Univ.) MW2009-26
We demonstrated highly accurate and very stable phase characteristics of microwave/millimeter-wave phase shifter for opt... [more] MW2009-26
OFT 2009-05-29
Shizuoka   Improvement in measurement accuracy of double-pulse Brillouin optical time-domain reflectometry with signal processing technology
Kazushi Oishi, Satoshi Matsuura, Shoji Adachi (Yokogawa Electric Corp.), Yahei Koyamada (Ibaraki Univ.) OFT2009-16
To detect the peak frequency of the Brillouin spectrum accurately is very important to achieve a high accurate strain an... [more] OFT2009-16
OFT 2009-01-23
Kochi   Numerical simulation of nonlinear pulse propagation effect on distributed strain and temperature measurement with BOTDR
Yahei Koyamada, Tetsuya Oda (Ibaraki Univ) OFT2008-79
This paper presents a numerical simulation on the nonlinear pulse propagation effect on the distributed strain and tempe... [more] OFT2008-79
OFT 2009-01-23
Kochi   Numerical simulation of nonlinear pulse propagation effect on distributed strain and temperature measurement with BOTDA
Yahei Koyamada, Naoya Tsuji (Ibaraki Univ.) OFT2008-80
This paper presents a numerical simulation of the nonlinear pulse propagation effect on the distributed strain and tempe... [more] OFT2008-80
EMCJ 2008-12-19
Gifu Gifu Univ. Radiation pattern control of array antenna by optical wavelength control
Takashi Kano, Kenichi Yamaguchi, Wataru Chujo (Meijo Univ.), Yahei Koyamada (Ibaraki Univ.) EMCJ2008-88
In measurement of electromagnetic field distribution using optical electric field sensor, if sensor array with variable ... [more] EMCJ2008-88
OPE, EMT, MW 2008-07-24
Hokkaido   [Invited Talk] Experimental study of millimeter-wave optically controlled array antenna sharing optical phase shifters for transmission and reception
Wataru Chujo (Meijo Univ.), Wataru Ohuchi (Ibaraki Univ.), Yoshiyuki Fujino (NICT), Yahei Koyamada (Ibaraki Univ.) MW2008-51 OPE2008-34
We have carried out the experiments of WDM-based optically controlled array antenna with wideband true-time-delay charac... [more] MW2008-51 OPE2008-34
OFT 2008-05-15
Osaka   [Special Invited Talk] Studies on scattering of lightwave in single-mode fibers and fiber-optic distributed strain and temperature sensors
Yahei Koyamada (Ibaraki Univ.) OFT2008-8
This paper outlines our recent work on the simulation and design of Brillouin gain spectrum in single-mode fibers, doubl... [more] OFT2008-8
AP 2008-04-17
Osaka Osaka Electro-Communication University Experimental evaluation of 20-40 GHz true-time-delay characteristics for receiving optically controlled multibeam array antenna
Wataru Chujo (Meijo Univ.), Wataru Ohuchi (Ibaraki Univ.), Yoshiyuki Fujino (NICT), Yahei Koyamada (Ibaraki Univ.) AP2008-6
In addition to the experiments of WDM-based optically controlled transmitting array antenna we have ever studied, optica... [more] AP2008-6
OPE, OFT 2008-03-07
Tokyo Kikai-Shinko-Kaikan Bldg. Experimental study on applicability of optical fiber to optically controlled array antenna
Wataru Chujo (NICT), Wataru Ohuchi (Ibaraki Univ.), Yoshiyuki Fujino (NICT), Yahei Koyamada (Ibaraki Univ.) OFT2007-72 OPE2007-191
Research of optically controlled, microwave/millimeter-wave phased array antenna consists of optical feed circuit is cur... [more] OFT2007-72 OPE2007-191
Ibaraki Kashima Space Research Center (NICT) Experimental Study of millimeter-wave optically controlled array antenna sharing with Ku- and Ka-band frequencies
Wataru Chujo (NICT), Wataru Ohuchi (Ibaraki Univ.), Yoshiyuki Fujino (NICT), Yahei Koyamada (Ibaraki Univ.) SAT2007-62
Research of millimeter-wave satellite communications is currently under development to realize broadband satellite commu... [more] SAT2007-62
 Results 1 - 20 of 31  /  [Next]  
Choose a download format for default settings. [NEW !!]
Text format pLaTeX format CSV format BibTeX format
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)

[Return to Top Page]

[Return to IEICE Web Page]

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan