Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Takuji Nagashima"'
Autor:
Tetsuya Hayashi, Ayumi Inoue, Yohei Suzuki, Yuji Norisugi, Keiji Kawamoto, Junya Takano, Takuji Nagashima, Takao Hirama, Kentaro Takeda, Yuki Shimoda, Fumiaki Sato
Publikováno v:
2023 Optical Fiber Communications Conference and Exhibition (OFC).
We developed 12-core fibers suitable for short/medium-reach applications and fabricated a 144-fiber 8-mm-outer-diameter cable using the 12-core fibers, which demonstrates the feasibility of ultra-high-core-count optical cables that can be blown into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9fba33378f50953068186b0febbdef0
https://doi.org/10.23919/ofc49934.2023.10117007
https://doi.org/10.23919/ofc49934.2023.10117007
Autor:
Ruben S. Luis, Giammarco Di Sciullo, Georg Rademacher, Benjamin Puttnam, Andrea Marotta, Robert Emmerich, Nicolas Braig-Christophersen, Ralf Stolte, Fabio Graziosi, Antonio Mecozzi, Colja Schubert, Tetsuya Hayashi, Takuji Nagashima, Cristian Antonelli, Hideaki Furukawa
Publikováno v:
Optical Fiber Communication Conference (OFC) 2023.
We demonstrate the first meshed spatial-super-channel switching SDM network using field-deployed coupled-core multicore fibers with a 3 line-side, colorless, directionless ROADM. We evaluate 19 network scenarios including add&drop, bypass and groomin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ddd823074c00e2012582e217ade93e
https://doi.org/10.1364/ofc.2023.th4c.3
https://doi.org/10.1364/ofc.2023.th4c.3
Publikováno v:
2022 Asia Communications and Photonics Conference (ACP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ef3a49a7712edf7907186ff6c983f43
https://doi.org/10.1109/acp55869.2022.10088935
https://doi.org/10.1109/acp55869.2022.10088935
Autor:
Benjamin J. Puttnam, Naoya Wada, Tetsuya Hayashi, Taketoshi Takahata, Hideaki Furukawa, Toshiki Taru, Tetsuya Kobayashi, Werner Klaus, Tobias A. Eriksson, Georg Rademacher, Jun Sakaguchi, Ruben S. Luis, Tetsuya Nakanishi, Takuji Nagashima, Yoshinari Awaji
Publikováno v:
Journal of Lightwave Technology. 39:1048-1055
High capacity transmission with a data rate over 10.66 Pb/s is demonstrated in a 13 km, 38-core-3-mode few-mode multi-core fiber. This was achieved with a single optical comb source to generate 368 × 24.5 GBaud 64- or 256-quadrature-amplitude-modula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7af0d32086b065dc53db632dacbd99c
https://doi.org/10.1109/jlt.2020.3018128
https://doi.org/10.1109/jlt.2020.3018128
Autor:
Tetsuya Hayashi, Takuji Nagashima, Ayumi Inoue, Hirotaka Sakuma, Takahiro Suganuma, Takemi Hasegawa
Publikováno v:
Optical Fiber Communication Conference (OFC) 2022.
We review and discuss the design factors and considerations on MCFs for bidirectional transmissions, including connection polarity and crosstalk requirements. We also introduce MCFs suitable for bidirectional long-haul and short-reach transmissions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2f84bc98ff7edb71f1bdfdee3491a36
https://doi.org/10.1364/ofc.2022.m1e.1
https://doi.org/10.1364/ofc.2022.m1e.1
Autor:
Hideaki Furukawa, Ruben S. Luis, Tetsuya Kobayashi, Taketoshi Takahata, Toshiki Taru, Jun Sakaguchi, Werner Klaus, Tetsuya Hayashi, Georg Rademacher, Benjamin J. Puttnam, Tobias A. Eriksson, Tetsuya Nakanishi, Takuji Nagashima, Yoshinari Awaji
Publikováno v:
ECOC
We demonstrate multi-span transmission over 65 ( $5\times 13$ ) km few-mode multi-core fiber by transmitting $368\times 24.5$ GBaud C- and L-band signals with QPSK, 16- or 64 QAM modulation. We analyze each core-combination's transmission channel cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f989216709604913ae84a736adf69fda
https://doi.org/10.1109/ecoc48923.2020.9333329
https://doi.org/10.1109/ecoc48923.2020.9333329
Autor:
Antonio Mecozzi, Mikael Mazur, Nicolas K. Fontaine, Tetsu Morishima, Tetsuya Hayashi, Fabio Graziosi, Roland Ryf, Andrea Marotta, Haoshuo Chen, Takuji Nagashima, Tetsuya Nakanishi, Cristian Antonelli
Publikováno v:
ECOC
We show combined SDM/WDM transmission over a deployed and cabled 4-core coupled-core fibers over distances up to 4014 km for QPSK and 2768 km for 16QAM signals. The results confirm the technical viability of coupled-core fibers in the field.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00b1161be45a1e51ffedab1d9606dd6c
http://hdl.handle.net/11697/161030
http://hdl.handle.net/11697/161030
Autor:
Hideaki Furukawa, Ruben S. Luis, Naoya Wada, Tetsuya Kobayashi, Jun Sakaguchi, Tobias A. Eriksson, Taketoshi Takahata, Tetsuya Nakanishi, Benjamin J. Puttnam, Georg Rademacher, Yoshinari Awaji, Tetsuya Hayashi, Takuji Nagashima, Toshiki Taru, Werner Klaus
Publikováno v:
OFC
We demonstrate transmission of 368-WDM-38-core-3-mode × 24.5-GBaud 64-and 256-QAM signals over 13 km. Record data-rate and spectral-efficiency of 1158.7 b/s/Hz were enabled by a low DMD 38-core-3-mode fiber with high uniformity amongst cores.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cec75c19de2641296df31a2efdf8fe8
https://doi.org/10.1364/ofc.2020.th3h.1
https://doi.org/10.1364/ofc.2020.th3h.1
Autor:
Tetsu Morishima, Mikael Mazur, Fabio Graziosi, Antonio Mecozzi, Takuji Nagashima, Haoshuo Chen, Nicolas K. Fontaine, R. Ryf, Tetsuya Nakanishi, Cristian Antonelli, Tetsuya Hayashi, Andrea Marotta
Publikováno v:
ECOC
We measure the impulse response of cabled coupled- and uncoupled multi-core fibers over 100 nm in the C- and L-band. Our results provide insights to the properties of deployed SDM fibers for usage in applications such as transmission and distributed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3488861a5b117c6b7c197bcd1a8412a
http://hdl.handle.net/11697/161028
http://hdl.handle.net/11697/161028
Autor:
Toshiki Taru, Takuji Nagashima, Kazuhiro Yonezawa, Koji Igarashi, Yuta Wakayama, Tetsuya Hayashi, Daiki Soma, Takashi Sasaki, Takehiro Tsuritani
Publikováno v:
Journal of Lightwave Technology. 35:748-754
This paper describes a six-mode 19-core fiber with 114 spatial modes, which was designed and fabricated for weakly-coupled mode-division-multiplexed (MDM) transmission over uncoupled cores. The 19 identical graded-index cores were packed on a hexagon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc84bef6c8ec7b0de53d7da07b02f3ad
https://doi.org/10.1109/jlt.2016.2617894
https://doi.org/10.1109/jlt.2016.2617894