Author

Koki Takeshima

Observed name: K. Takeshima

Observed institutions: Tohoku Gakuin University, KDDI Research (Japan), KDDI (Japan)

OpenAlex ID: A5108538660

114 Space-Division-Multiplexed Transmission over 9.8-km Weakly-Coupled-6-Mode Uncoupled-19-Core Fibers

2015 · Koji Igarashi, Daiki Souma, et al. · Optical Fiber Communication Conference · 100

Ultra-dense spatial-division-multiplexed optical fiber transmission over 6-mode 19-core fibers

2016 · Koji Igarashi, Daiki Soma, et al. · Optics Express · 92

2.05 Peta-bit/s super-nyquist-WDM SDM transmission using 9.8-km 6-mode 19-core fiber in full C band

2015 · D. Soma, K. Igarashi, et al. · European Conference on Optical Communication · 90

First demonstration of MC-EDFA-repeatered SDM transmission of 40 x 128-Gbit/s PDM-QPSK signals per core over 6,160-km 7-core MCF

2013 · H. Takahashi, T. Tsuritani, et al. · Optics Express · 69

1109-Tbit/s SDM transmission over 6,370 km using a full C-band seven-core EDFA

2013 · Koji Igarashi, Koki Takeshima, et al. · Optics Express · 53

Selective mode multiplexer based on phase plates and Mach-Zehnder interferometer with image inversion function

2015 · Koji Igarashi, Daiki Souma, et al. · Optics Express · 46

First Demonstration of MC-EDFA-Repeatered SDM Transmission of 40 × 128-Gbit/s PDM-QPSK Signals per Core over 6,160-km 7-core MCF

2012 · H. Takahashi, T. Tsuritani, et al. · European Conference on Optical Communication · 38

51.1-Tbit/s MCF Transmission Over 2520 km Using Cladding-Pumped Seven-Core EDFAs

2015 · Koki Takeshima, Takehiro Tsuritani, et al. · Journal of Lightwave Technology · 30

400-Gbit/s optical OFDM transmission over 80 km in 50-GHz frequency grid

2010 · Hidenori Takahashi, Koki Takeshima, et al. · European Conference on Optical Communication · 28

51.1-Tbit/s MCF Transmission over 2,520 km Using Cladding Pumped 7-core EDFAs

2015 · K. Takeshima, T. Tsuritani, et al. · Optical Fiber Communication Conference · 23

Scattered Pilot Channel Tracking Method for PDM-CO-OFDM Transmissions Using Polar-Based Intra-Symbol Frequency-Domain Average

2011 · Wei-Ren Peng, Koki Takeshima, et al. · Optical Fiber Communication Conference · 10

Cladding-Pumped L-Band Multicore EDFA with Reduced Power Consumption

2014 · Y. Tsuchida, K. Maeda, et al. · IEEE/LEOS Summer Topical Meetings · 9

Cladding pumped multicore EDFA with output power over 20 dBm using a fiber based pump combiner

2015 · K. Maeda, Y. Tsuchida, et al. · Opto-Electronics and Communications Conference (OECC) · 7

WDM/SDM transmission of 76 × 128-Gbit/s Nyquist-pulse-shaped DP-QPSK Signals over 4,200 km using cladding pumped 7-Core EDFA

2015 · K. Takeshima, T. Tsuritani, et al. · Opto-Electronics and Communications Conference (OECC) · 3

Software-defined optical transmission and networking with functional service design

2016 · Xiaoyuan Cao, Noboru Yoshikane, et al. · International Conference on Photonics in Switching · 2

Polarization Demultiplexing Using Linearly-Estimated Channel Matrix in PDM Systems with MIMO Processing

2012 · Koki Takeshima, Hidenori Takahashi, et al. · National Fiber Optic Engineers Conference (NFOEC) · 2

Ultra-dense space division multiplexing technologies towards multi-Peta bit/s optical transmission

2016 · Masatoshi Suzuki, Daiki Soma, et al. · International Conference on Transparent Optical Networks · 1

Degenerate modes multiplexer/demultiplexer using Mach-Zehnder interferometer with image inversion

2014 · Daiki Soma, Koki Takeshima, et al. · European Conference on Optical Communication · 1

Ultra-Long-Haul Transmission Using Multicore Fiber Repeatered by Multicore EDFA

2013 · Hidenori Takahashi, Koji Igarashi, et al. · OptoElectronics and Communications Conference and International Conference on Photonics in Switching and Computing (OECC/PSC) · 1

Polarization demultiplexing using linearly interpolated channel matrix in PDM systems with MIMO processing

2011 · Koki Takeshima, Hidenori Takahashi, et al. · Opto-Electronics and Communications Conference (OECC) · 1

Experimental evaluation of tolerable polarization change in PDM-OFDM systems with training symbols

2010 · K. Takeshima, H. Takahashi, et al. · Asia Communications and Photonics Conference · 1

Cladding pumped seven-core amplifier by core absorption enhanced MC-EDF

2017 · Koichi Maeda, Yukihiro Tsuchida, et al. · IEICE Technical Report; IEICE Tech. Rep.

95.2Tb/s transoceanic seven-core fiber transmission using optical pre-filtered 200Gbit/s-based PDM-QPSK WDM signals

2016 · Yu Kawaguchi, Koki Takeshima, et al. · International Conference on Photonics in Switching

High power cladding pumped multicore EDFA

2015 · Koichi Maeda, Yukihiro Tsuchida, et al. · IEICE Technical Report; IEICE Tech. Rep.

Full-C-Band 110.9-Tbit/s Multi-Core Fiber Transmission Experiments over 6,370-km

2013 · Koji Igarashi, Koki Takeshima, et al. · IEICE Technical Report; IEICE Tech. Rep.

Works count: 31

Citation count: 607

H-index: 10

I10-index: 11