Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Asuka Matsushita"'
Autor:
Hideki Maeda, Masahito Tomizawa, Shoichiro Kuwahara, Yoshihiro Ogiso, Asuka Matsushita, Masanori Nakamura, Takeo Sasai, Takayuki Kobayashi, Kohei Saito, Hiroki Kawahara, Yoshiaki Kisaka, Hiroki Taniguchi, Josuke Ozaki, Takeshi Seki, Fukutaro Hamaoka
Publikováno v:
IEICE Transactions on Communications. :1183-1189
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e39bddcdd6f507892ca665fb482591ce
https://doi.org/10.1587/transcom.2019obi0003
https://doi.org/10.1587/transcom.2019obi0003
Autor:
Etsushi Yamazaki, Takeo Sasai, Masanori Nakamura, Seiji Okamoto, Asuka Matsushita Hideki Nishizawa, Yoshiaki Kisaka, Fukutaro Hamaoka, Shuto Yamamoto
Publikováno v:
OFC
We experimentally demonstrate simultaneous localization of optical excess loss points and spans with different dispersion in multi-span fiber links using a neural-network based digital backpropagation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::854a24f886546a7f6daa2a7416c650f4
https://doi.org/10.1364/ofc.2020.th1f.1
https://doi.org/10.1364/ofc.2020.th1f.1
Autor:
Shunichi Soma, Munehiko Nagatani, Yusuke Nasu, Kiyofumi Kikuchi, Toshihiro Itoh, Teruo Jyo, Asuka Matsushita, Takashi Yamada, Masayuki Takahashi, Y. Kurata, Shogo Yamanaka, Yuriko Kawamura, Yuichiro Ikuma, Ken Tsuzuki, Makoto Jizodo
Publikováno v:
OFC
We present a silicon photonics coherent optical subassembly, which has electro-optic/ optic-electro bandwidths of 54 GHz/52 GHz for a transmitter/receiver. We also demonstrate up to 96 Gbaud polarization multiplexed 16QAM signal generation and detect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f3390f0e2ec3b31e7d2d09605a26f2e
https://doi.org/10.1364/ofc.2020.th4a.4
https://doi.org/10.1364/ofc.2020.th4a.4
Autor:
Horikoshi Kengo, Munehiko Nagatani, Yutaka Miyamoto, Hiroshi Yamazaki, Masanori Nakamura, Toshikazu Hashimoto, Shigeru Kanazawa, Hideyuki Nosaka, Fukutaro Hamaoka, Asuka Matsushita
Publikováno v:
Optics Communications. 409:66-71
In advanced fiber transmission systems with digital signal processors (DSPs), analog bandwidths of digital-to-analog converters (DACs), which interface the DSPs and optics, are the major factors limiting the data rates. We have developed a technology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fa9503b9c1289f712dd380225429e74
https://doi.org/10.1016/j.optcom.2017.06.100
https://doi.org/10.1016/j.optcom.2017.06.100
Autor:
Yoshihiro Ogiso, Hideyuki Nosaka, M. Nakamura, Hitoshi Wakita, Hiroshi Yamazaki, Fukutaro Hamaoka, Y. Miyamoto, Minoru Ida, Munehiko Nagatani, Asuka Matsushita, Tetsuro Kobayashi
Publikováno v:
45th European Conference on Optical Communication (ECOC 2019).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8316e115b9fac740826188400f202a73
https://doi.org/10.1049/cp.2019.0856
https://doi.org/10.1049/cp.2019.0856
Autor:
Seiji Okamoto, Asuka Matsushita, Yoshiaki Kisaka, Fukutaro Hamaoka, Horikoshi Kengo, Masanori Nakamura
Publikováno v:
OFC
We propose sub-band digital back propagation (DBP). We confirmed performance improvement by 4 sub-band DBP with 10-WDM 64-Gbaud 64QAM transmission over 840 km. Total FFT/IFFT size becomes approximately one quarter of full-band DBP.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa5f426699866d8fe8996c503323877c
https://doi.org/10.1364/ofc.2019.w2a.49
https://doi.org/10.1364/ofc.2019.w2a.49
Autor:
Horikoshi Kengo, Masanori Nakamura, Fukutaro Hamaoka, Yoshiaki Kisaka, Asuka Matsushita, Seiji Okamoto
Publikováno v:
OFC
We propose to precisely distribute equalization for transceiver imperfection between digital and optical domain. 1.7- and 4.6-dB OSNR tolerance improvements were confirmed for PDM-256QAM and PDM-64QAM signals with net-rates of 793 and 851 Gbps/carrie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3d26917a8593d16416a16656c31520d
https://doi.org/10.1364/ofc.2019.w4b.2
https://doi.org/10.1364/ofc.2019.w4b.2
41-Tbps C-band transmission with 10-bps/Hz spectral efficiency using 1-Tbps 96-GBd PS-256QAM for DCI
Publikováno v:
45th European Conference on Optical Communication (ECOC 2019).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3595058953490d96bbc6512aa7acf1b
https://doi.org/10.1049/cp.2019.0841
https://doi.org/10.1049/cp.2019.0841
Autor:
Fukutaro Hamaoka, Hiroshi Yamazaki, Tetsuro Kobayashi, Hideyuki Nosaka, Asuka Matsushita, Hitoshi Wakita, Masanori Nakamura, Yutaka Miyamoto, Munehiko Nagatani
Publikováno v:
OFC
We propose an electrical spectrum synthesis technique using digital pre-processing with an interband crosstalk compensation and newly developed ultra-broadband electrical bandwidth doublers. A 120-GBaud PDM-32QAM signal (net rate: 954.2 Gb/s) has bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8539c02a8b465c92f85cfe846d8f5d4b
https://doi.org/10.1364/ofc.2019.m2h.6
https://doi.org/10.1364/ofc.2019.m2h.6
Autor:
Seiji Okamoto, Hiroshi Yamazaki, Masanori Nakamura, Munehiko Nagatani, Yutaka Miyamoto, Hideyuki Nosaka, Fukutaro Hamaoka, Asuka Matsushita, Hitoshi Wakita, Tetsuro Kobayashi
Publikováno v:
OFC
We demonstrate 1.04-Tbps/carrier net-rate 125-GHz-spaced 9-WDM (9.3-Tbps) transmission over 240-km using 120-GBd probabilistically shaped PDM-64QAM generated by electrical spectrum synthesis technique with in-house ultra-broadband bandwidth doublers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::727fc56dcae8cb4a7f169bb64b81a116
https://doi.org/10.1364/ofc.2019.m4i.4
https://doi.org/10.1364/ofc.2019.m4i.4