Search Results - "Aikawa, Kazuhiko"

Few-mode multicore fibers for long-haul transmission line by Sasaki, Yusuke, Takenaga, Katsuhiro, Matsuo, Shoichiro, Aikawa, Kazuhiko, Saitoh, Kunimasa

“…•Designee issues in FM-MCFs are presented.•Proposed FM-MCFs to date are reviewed.•Design and measured characteristics of a fabricated FM-MCF are presented…”
Get full text

Spatial Density and Splicing Characteristic Optimized Few-Mode Multi-Core Fiber by Sakamoto, Taiji, Saitoh, Kunimasa, Saitoh, Shota, Abe, Yoshiteru, Takenaga, Katsuhiro, Urushibara, Azusa, Wada, Masaki, Matsui, Takashi, Aikawa, Kazuhiko, Nakajima, Kazuhide

“…Few-mode fiber design suitable for long-haul dense space division multiplexing (SDM) transmission is proposed, where the spatial density and the splicing…”
Get full text

Long-Haul Dense Space-Division Multiplexed Transmission Over Low-Crosstalk Heterogeneous 32-Core Transmission Line Using a Partial Recirculating Loop System by Mizuno, Takayuki, Shibahara, Kohki, Feihong Ye, Sasaki, Yusuke, Amma, Yoshimichi, Takenaga, Katsuhiro, Yongmin Jung, Pulverer, Klaus, Ono, Hirotaka, Abe, Yoshiteru, Yamada, Makoto, Saitoh, Kunimasa, Matsuo, Shoichiro, Aikawa, Kazuhiko, Bohn, Marc, Richardson, David J., Miyamoto, Yutaka, Morioka, Toshio

“…In this paper, we present long-haul 32-core dense space-division-multiplexed (DSDM) unidirectional transmission over a single-mode multicore transmission line…”
Get full text

Investigation of Intermodal Nonlinear Signal Distortions in Few-Mode Fiber Transmission by Rademacher, Georg, Luis, Ruben S., Puttnam, Benjamin J., Maruyama, Ryo, Aikawa, Kazuhiko, Awaji, Yoshinari, Furukawa, Hideaki, Petermann, Klaus, Wada, Naoya

“…We present an experimental investigation of the Q -factor penalty due to intra and intermodal nonlinear signal distortions on 24.5 GBaud 16-quadratic-amplitude…”
Get full text

Crosstalk Analysis of Heterogeneous Multicore Fibers Using Coupled-Mode Theory by Fujisawa, Takeshi, Amma, Yoshimichi, Sasaki, Yusuke, Matsuo, Shoichiro, Aikawa, Kazuhiko, Saitoh, Kunimasa, Koshiba, Masanori

“…Intercore crosstalk of heterogeneous multicore fiber is investigated based on coupled-mode theory. Random twisting model is used for estimating the crosstalk…”
Get full text

Six-Mode Seven-Core Fiber for Repeated Dense Space-Division Multiplexing Transmission by Sakamoto, Taiji, Saitoh, Kunimasa, Saitoh, Shota, Shibahara, Kohki, Wada, Masaki, Abe, Yoshiteru, Urushibara, Azusa, Takenaga, Katsuhiro, Mizuno, Takayuki, Matsui, Takashi, Aikawa, Kazuhiko, Miyamoto, Yutaka, Nakajima, Kazuhide

Get full text

Optimal design of 4LP-mode multicore fibers for high spatial multiplicity by Tobita, Yuki, Fujisawa, Takeshi, Sakamoto, Taiji, Matsui, Takashi, Saitoh, Shota, Takenaga, Katsuhiro, Aikawa, Kazuhiko, Aozasa, Shinichi, Nakajima, Kazuhide, Saitoh, Kunimasa

Get full text

Preventive Effect of Chronic Endothelin Type A Receptor Antagonist on Coronary Microvascular Spasm Induced by Repeated Epicardial Coronary Artery Endothelial Denudation in Pigs by Osugi, Taku, Saitoh, Shu-ichi, Matumoto, Ken, Muto, Mituru, Aikawa, Kazuhiko, Ohkawara, Hiroshi, Sugimoto, Kouichi, Kamioka, Masashi, Ishibashi, Toshiyuki, Maruyama, Yukio

“…Aim: We investigated the role of endothelin-1 (ET-1) in coronary microvascular spasm in a porcine model. Methods: A flowmeter was implanted around the left…”
Get full text

Optical-Fiber Cable Employing 200-μm-Coated Four-Core Multicore Fibers by Sasaki, Yusuke, Fukumoto, Ryohei, Takenaga, Katsuhiro, Shimizu, Shogo, Aikawa, Kazuhiko

“…Combining small-diameter optical-fiber technology and space-division multiplexing employing multicore fiber (MCF) is a promising method for further increasing…”
Get full text

Record-High Secret Key Rate for Joint Classical and Quantum Transmission Over a 37-Core Fiber by Lio, Beatrice Da, Bacco, Davide, Cozzolino, Daniele, Ros, Francesco Da, Guo, Xueshi, Ding, Yunhong, Sasaki, Yusuke, Aikawa, Kazuhiko, Miki, Shigehito, Terai, Hirotaka, Yamashita, Taro, Neergaard-Nielsen, Jonas S., Galili, Michael, Rottwitt, Karsten, Andersen, Ulrik L., Oxenlowe, Leif K., Morioka, Toshio

“…We overcome the low secret key rates of current quantum communication systems using space division multiplexing in a heterogeneous 37-core fiber. We…”
Get full text

High Capacity Transmission With Few-Mode Fibers by Rademacher, Georg, Luis, Ruben S., Puttnam, Benjamin J., Eriksson, Tobias A., Ryf, Roland, Agrell, Erik, Maruyama, Ryo, Aikawa, Kazuhiko, Awaji, Yoshinari, Furukawa, Hideaki, Wada, Naoya

“…We experimentally investigate high-capacity few-mode fiber transmission for short and medium-haul optical links. In separate experiments, we demonstrate C + L…”
Get full text

Multiple endothelial injury in epicardial coronary artery induces downstream microvascular spasm as well as remodeling partly via thromboxane A2 by Saitoh, Shu-ichi, Onogi, Futoshi, Aikawa, Kazuhiko, Muto, Mitsuru, Saito, Tomiyoshi, Maehara, Kazuhira, Maruyama, Yukio

“…OBJECTIVES The study was undertaken to develop a coronary microvascular spasm model in pigs by repeated epicardial coronary artery endothelial injury…”
Get full text

Low-Loss and Low-DMD 6-Mode 19-Core Fiber With Cladding Diameter of Less Than 250 μm by Sakamoto, Taiji, Matsui, Takashi, Saitoh, Kunimasa, Saitoh, Shota, Takenaga, Katsuhiro, Mizuno, Takayuki, Abe, Yoshiteru, Shibahara, Kohki, Tobita, Yuki, Matsuo, Shoichiro, Aikawa, Kazuhiko, Aozasa, Shinichi, Nakajima, Kazuhide, Miyamoto, Yutaka

“…We investigate a few-mode multicore fiber structure suitable for realizing a high spatial density while maintaining a feasible cladding diameter. First, we…”
Get full text

Pulse distortion and the square of the degree of coherence in the presence of second- and third-order dispersions by Shibata, Nori, Watanabe, Kimitaka, Ohashi, Masaharu, Aikawa, Kazuhiko

Get full text

Petabit-per-second data transmission using a chip-scale microcomb ring resonator source by Jørgensen, A. A., Kong, D., Henriksen, M. R., Klejs, F., Ye, Z., Helgason, Ò. B., Hansen, H. E., Hu, H., Yankov, M., Forchhammer, S., Andrekson, P., Larsson, A., Karlsson, M., Schröder, J., Sasaki, Y., Aikawa, K., Thomsen, J. W., Morioka, T., Galili, M., Torres-Company, V., Oxenløwe, L. K.

“…Optical fibre communication is the backbone of the internet. As essential core technologies are approaching their limits of size, speed and energy-efficiency,…”
Get full text

Space-division multiplexed transmission in the S-band over 55 km few-mode fibers by Rademacher, Georg, Puttnam, Benjamin J., Luis, Ruben S., Galdino, Lidia, Maruyama, Ryo, Aikawa, Kazuhiko, Awaji, Yoshinari, Furukawa, Hideaki

“…Transmission of highly spectral efficient 24.5 GBaud quadrature phase shift keying and 16- and 64-quadrature amplitude modulated signals in the S-band between…”
Get full text

Differing effects of metoprolol and propranolol on large vessel and microvessel responsiveness in a porcine model of coronary spasm by Muto, Mitsuru, Saitoh, Shu-ichi, Osugi, Taku, Matsumoto, Ken, Aikawa, Kazuhiko, Onogi, Futoshi, Ishibashi, Toshiyuki, Maruyama, Yukio

“…OBJECTIVESThe purpose of this study is to assess the effect of β1-selective blocker on coronary vasospasm. MATERIALS AND METHODSBalloon epicardial coronary…”
Get full text

1.2 Pb/s Throughput Transmission Using a 160 $\mu$m Cladding, 4-Core, 3-Mode Fiber by Luis, Ruben S., Rademacher, Georg, Puttnam, Benjamin J., Eriksson, Tobias A., Furukawa, Hideaki, Ross-Adams, Andrew, Gross, Simon, Withford, Michael, Riesen, Nicolas, Sasaki, Yusuke, Saitoh, Kunimasa, Aikawa, Kazuhiko, Awaji, Yoshinari, Wada, Naoya

Get full text

Large-Scale Procurement of Radiation Resistant Single-Mode Optical Fibers for CERN by Guillermain, Elisa, Aikawa, Kazuhiko, Kuhnhenn, Jochen, Ricci, Daniel, Weinand, Udo

“…2400 km of special radiation resistant optical fibres were procured by CERN (European Organization for Nuclear Research), for the installation of more than 55…”
Get full text

Optimal design of 4LP-mode multicore fibers for high spatial multiplicity by Tobita, Yuki, Fujisawa, Takeshi, Sakamoto, Taiji, Matsui, Takashi, Saitoh, Shota, Takenaga, Katsuhiro, Aikawa, Kazuhiko, Aozasa, Shinichi, Nakajima, Kazuhide, Saitoh, Kunimasa

“…High spatial multiplicity fiber designs are presented for homogeneous and heterogeneous 4LP-mode multicore fibers (MCFs) that support six spatial modes per…”
Get full text