Zobrazeno 1 - 10
of 526
pro vyhledávání: '"Naokatsu Yamamoto"'
Autor:
Budsara Boriboon, Duang-rudee Worasucheep, Satoshi Shimizu, Satoshi Shinada, Hideaki Furukawa, Atsushi Matsumoto, Kouichi Akahane, Naokatsu Yamamoto, Naoya Wada
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-12 (2022)
SOA is the key device for burst-mode upstream transmission of 40 Gb/s access network to extend distance and increase users. We evaluate two conventional SOAs and our QD-SOA in networks, consisting of 20-km Single Mode Fiber (SMF) and splitters (1:8,
Externí odkaz:
https://doaj.org/article/e26c48ef229e4a4b950f612e1a8cbc10
Autor:
Othman Isam Younus, Hoa Le Minh, Pham Tien Dat, Naokatsu Yamamoto, Anh T. Pham, Zabih Ghassemlooy
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 3, Pp 1-14 (2020)
This paper proposes a novel approach to provide a privately secured multiple-input and multiple-output visible light communication (VLC) in the mobility conditions. In the proposed system, a private secured VLC link is adaptively allocated to a mobil
Externí odkaz:
https://doaj.org/article/33678824d80c4371bd46089ddf100047
Autor:
Francois Rottenberg, Pham Tien Dat, Trung-Hien Nguyen, Atsushi Kanno, Francois Horlin, Jerome Louveaux, Naokatsu Yamamoto
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 2, Pp 1-14 (2018)
Offset-QAM-based filterbank multicarrier (FBMC-OQAM) is an attractive modulation candidate to increase the spectral efficiency of radio-over-fiber and fiber-wireless systems. In this paper, we first propose a general framework for MIMO FBMC-OQAM tran
Externí odkaz:
https://doaj.org/article/793c7a8459b64abba9f5950e00ff3a15
Publikováno v:
IEEE Access, Vol 5, Pp 24602-24607 (2017)
In this paper, a simple self-homodyne detection scheme is proposed and experimentally demonstrated for applications in optical access networks. Unmodulated pilot subframes are periodically inserted and interleaved with data subframes to form an ortho
Externí odkaz:
https://doaj.org/article/a84d3139ba8441c580d237e3f981945f
Autor:
Nazirul Afham Idris, Naokatsu Yamamoto, Kouichi Akahane, Katsumi Yoshizawa, Yasunori Tomomatsu, Makoto Sudo, Tadashi Hajikano, Ryogo Kubo, Takuya Uesugi, Takahiro Kikuchi, Hiroyuki Tsuda
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 1, Pp 1-10 (2016)
A wavelength-division multiplexing/time-division multiplexing (WDM/TDM) network exploiting the broad wavelength range of T-band (1000–1260 nm) is proposed. The network is based on different wavebands of downlink and uplink channels, with each trans
Externí odkaz:
https://doaj.org/article/14e0899691ea4613877f1c525a073cce
Publikováno v:
Crystals, Vol 10, Iss 2, p 90 (2020)
Herein, we report on our investigation of a fabrication scheme for self-assembled quantum dots (QDs), which is another type of Stranski−Krastanow (S−K) growth mode. The In(P)As QD structure was formed by the irradiation of As flux on an InP(311)B
Externí odkaz:
https://doaj.org/article/b0c241a4daa449f29c03c527fa5f5b3b
Publikováno v:
Applied Sciences, Vol 9, Iss 3, p 554 (2019)
This paper reviews linear cell radar systems, which are radar systems consisting of many antenna units connected by radio-over-fiber to monitor linear-shaped areas. A linear cell system using a millimeter-wave band can provide high-resolution imaging
Externí odkaz:
https://doaj.org/article/05eaf18152dc47289c984099f6dafd2d
Autor:
Toshimasa Umezawa, Shoichi Takamizawa, Atsushi Matsumoto, Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Tetsuya Kawanishi
Publikováno v:
Journal of Lightwave Technology. 41:2465-2473
Autor:
Yuya Yamaguchi, Pham Tien Dat, Shingo Takano, Masayuki Motoya, Shotaro Hirata, Yu Kataoka, Junichiro Ichikawa, Satoshi Oikawa, Ryo Shimizu, Naokatsu Yamamoto, Kouichi Akahane, Atsushi Kanno, Tetsuya Kawanishi
Publikováno v:
Journal of Lightwave Technology. :1-8
Autor:
Anna HIRAI, Yuichi MATSUMOTO, Takanori SATO, Tadashi KAWAI, Akira ENOKIHARA, Shinya NAKAJIMA, Atsushi KANNO, Naokatsu YAMAMOTO
Publikováno v:
IEICE Transactions on Electronics. :385-388