Výsledky vyhledávání - "Yoshimichi Amma"

Akademický článek

Crosstalk Analysis of Heterogeneous Multicore Fibers Using Coupled-Mode Theory

Autor: Takeshi Fujisawa, Yoshimichi Amma, Yusuke Sasaki, Shoichiro Matsuo, Kazuhiko Aikawa, Kunimasa Saitoh, Masanori Koshiba

Publikováno v: IEEE Photonics Journal, Vol 9, Iss 5, Pp 1-8 (2017)

Intercore crosstalk of heterogeneous multicore fiber is investigated based on coupled-mode theory. Random twisting model is used for estimating the crosstalk. The crosstalk of two kinds of fibers: triangular lattice 30-core fiber with four kinds of c

Externí odkaz: https://doaj.org/article/f62ea8b984804ee7b0f7acf93c1aa1a9

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Analysis of Crosstalk Dependence on Cladding Diameter in Heterogeneous Multi-core Fibers by Considering Polarization-mode Coupling Effects

Autor: Gustavo Ocampo, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Kunimasa Saitoh

Publikováno v: 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38072214774bf407ccadfd84095dd507
https://doi.org/10.23919/oecc/psc53152.2022.9850119

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Controlled generation of picosecond-pulsed higher-order Poincaré sphere beams from an ytterbium-doped multicore fiber amplifier

Autor: Kunhao Ji, Di Lin, Ian A. Davidson, Siyi Wang, Joel Carpenter, Yoshimichi Amma, Yongmin Jung, Massimiliano Guasoni, David J. Richardson

Publikováno v: Photonics Research. 11:181

Higher-order Poincaré sphere (HOPS) beams with spatially variable polarization and phase distributions are opening up a host of unique applications in areas ranging from optical communication to microscopy. However, the flexible generation of these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0e89573b850f205a05065ff9070740f
https://doi.org/10.1364/prj.475287

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Ultra-Low Crosstalk 125-μm-Cladding Four-Hole Four-Core Fibers Fabricated by the Over-Cladding Bundled Rods Method

Autor: Taiji Sakamoto, Katsuhiro Takenaga, Masaharu Ohashi, Shinichi Aozasa, Kyozo Tsujikawa, Saki Nozoe, Takashi Matsui, Kazuhiko Aikawa, Nobutomo Hanzawa, Ryohei Fukumoto, Yoshimichi Amma, Kazuhide Nakajima, Yoshiteru Abe

Publikováno v: Journal of Lightwave Technology. 37:5600-5608

We realized a four-core fiber with 125 μm-cladding and four-holes using a novel fabrication technique, namely the over-cladding bundled rods (OBR) method. Four air holes were successfully introduced by using the OBR method without the need for a dri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97941018ed9e62cf94ebf607871a7d8c
https://doi.org/10.1109/jlt.2019.2935546

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Iterative Unreplicated Parallel Interference Canceler for MDL-Tolerant Dense SDM (12-Core × 3-Mode) Transmission Over 3000 km

Autor: Hirotaka Ono, Doohwan Lee, Kunimasa Saitoh, Kazuhide Nakajima, Takayuki Mizuno, Yoshimichi Amma, Kohki Shibahara, Yutaka Miyamoto, Katsuhiro Takenaga

Publikováno v: Journal of Lightwave Technology. 37:1560-1569

We propose a novel multiple-input multiple-output (MIMO) detection scheme based on iterative unreplicated parallel interference cancelling (UPIC) technique for mode dependent loss (MDL)-impaired few-mode fibre (FMF) transmission. An optical MIMO chan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23987482c589a5a7ac0146c5ae8231c7
https://doi.org/10.1109/jlt.2019.2891554

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Demonstration of Single-Mode Multicore Fiber Transport Network With Crosstalk-Aware In-Service Optical Path Control

Autor: Yusuke Sasaki, Klaus Pulverer, Isoda Akira, Yoshimichi Amma, Md. Nooruzzaman, David J. Richardson, Saurabh Jain, Shaif-ul Alam, Tetsuro Inui, Ulrich Habel, Marc Bohn, Carlos Castro, Yutaka Miyamoto, Kohki Shibahara, Yongmin Jung, Takafumi Tanaka, Toshio Morioka, Kazuhiko Aikawa, Takayuki Mizuno

Publikováno v: Tanaka, T, Pulverer, K, Häbel, U, Castro, C, Bohn, M, Mizuno, T, Isoda, A, Shibahara, K, Inui, T, Miyamoto, Y, Sasaki, Y, Amma, Y, Aikawa, K, Jain, S, Jung, Y, Alam, S, Richardson, D J, Nooruzzaman, M & Morioka, T 2017, ' Demonstration of Single-Mode Multicore Fiber Transport Network with Crosstalk-Aware In-Service Optical Path Control ', Journal of Lightwave Technology, vol. 36, no. 7, pp. 1451-1457 . https://doi.org/10.1109/JLT.2017.2785844

Multicore fiber (MCF) transmission is considered as one of the promising technologies for breaking the capacity limit of traditional single mode fibers (SMFs). Managing the XT and configuring optical paths adaptively based on the XT are important as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ff7daf9d5898b5cd89c032dea708ceb
https://doi.org/10.1109/jlt.2017.2785844

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Ring-Core Multicore Few-Mode Erbium-Doped Fiber Amplifier

Autor: Kentaro Ichii, Tsukasa Hosokawa, Makoto Yamada, Katsuhiro Takenaga, Hirotaka Ono, Yoshimichi Amma, Shoichiro Matsuo

Publikováno v: IEEE Photonics Technology Letters. 29:2163-2166

In this letter, we demonstrate a seven-core few-mode erbium-doped fiber amplifier by core pumping for long-haul transmission system using a few-mode multicore fiber. The differential modal gain between the LP01 and LP11 modes is reduced to 3.2 dB or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93869c365e912638ca09a4876538c6ee
https://doi.org/10.1109/lpt.2017.2767040

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Long-Haul Dense Space-Division Multiplexed Transmission Over Low-Crosstalk Heterogeneous 32-Core Transmission Line Using a Partial Recirculating Loop System

Autor: Yutaka Miyamoto, Yoshimichi Amma, Kunimasa Saitoh, Kazuhiko Aikawa, Yongmin Jung, Klaus Pulverer, Takayuki Mizuno, Yoshiteru Abe, Toshio Morioka, Feihong Ye, Yusuke Sasaki, David J. Richardson, Katsuhiro Takenaga, Makoto Yamada, Marc Bohn, Shoichiro Matsuo, Kohki Shibahara, Hirotaka Ono

Publikováno v: Mizuno, T, Shibahara, K, Ye, F, Sasaki, Y, Amma, Y, Takenaga, K, Jung, Y, Pulverer, K, Ono, H, Abe, Y, Yamada, M, Saitoh, K, Matsuo, S, Aikawa, K, Bohn, M, Richardson, D J, Miyamoto, Y & Morioka, T 2017, ' Long-Haul Dense Space Division Multiplexed Transmission over Low-Crosstalk Heterogeneous 32-Core Transmission Line Using Partial Recirculating Loop System ', Journal of Lightwave Technology, vol. 35, no. 3, pp. 488-498 . https://doi.org/10.1109/JLT.2016.2615070
Journal of Lightwave Technology

In this paper, we present long-haul 32-core dense space division multiplexed (DSDM) unidirectional transmission over a single-mode multicore transmission line. We developed a low-crosstalk heterogeneous 32-core fiber with a square lattice arrangement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54596df5f2646cf2464dc71b9aea79c3
https://doi.org/10.1109/jlt.2016.2615070

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High Core Count Single-Mode Multicore Fibers for Dense Space Division Multiplexing

Autor: Kazuhiko Aikawa, Yusuke Sasaki, K. Takenaga, Yoshimichi Amma

Publikováno v: 2019 IEEE Photonics Conference (IPC).

Multicore fibers possess the potential to develop dense-space-division multiplexing systems. Several dense-space-division multiplexing system transmission experiments concerning multicore fibers have been demonstrated. Multicore fibers, including rec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21e89e2dc59c50be9d313c818ff3e58f
https://doi.org/10.1109/ipcon.2019.8908521

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