Capacity expansion in submarine cable systems with bidirectional transmission using 4-Core-or-More MCF and MC-EDFA
S Tateno, H Takeshita, K Hosokawa… - Journal of Lightwave …, 2023 - opg.optica.org
Bidirectional transmission in a multicore fiber (MCF) reduces core-to-core crosstalk,
changing optimal MCF design and multicore submarine cable systems, compared with …
changing optimal MCF design and multicore submarine cable systems, compared with …
Bidirectional cladding-pumped multicore EDFA and its optimization for energy efficiency by tuning pump condition
H Takeshita, Y Shimomura… - Journal of Lightwave …, 2023 - opg.optica.org
This work investigates the feasibility of improving the energy efficiency of a cladding-
pumped multicore (MC) EDFA by utilizing bidirectional (BD) pumping. The main issue with …
pumped multicore (MC) EDFA by utilizing bidirectional (BD) pumping. The main issue with …
Improvement of the energy efficiency of cladding pumped multicore EDFA employing bidirectional pumping and control
H Takeshita, Y Shimomura, K Hosokawa… - 2022 European …, 2022 - ieeexplore.ieee.org
Cladding pump optical power ratio between forward and backward was controlled to realize
the highest power efficiency. Considering output wavelength channel power equalization …
the highest power efficiency. Considering output wavelength channel power equalization …
Amplification technology for spatial division multiplexing signals transmitted using multicore fibres
H Takeshita - IET Optoelectronics, 2024 - Wiley Online Library
Amplification technologies needed for spatial division multiplexing (SDM) signal
transmission have been reported, especially focusing on submarine systems, which have …
transmission have been reported, especially focusing on submarine systems, which have …
Increase of Capacity with Bidirectional Transmission Using 4-core-or-more MCF and MC-EDFA in Submarine Systems
S Tateno, H Takeshita, K Hosokawa… - … and Exhibition on …, 2022 - opg.optica.org
We analytically demonstrate that bidirectional multicore transmission design with
bidirectional MC-EDFA increases the capacity of submarine cables, by 5.0 times, compared …
bidirectional MC-EDFA increases the capacity of submarine cables, by 5.0 times, compared …
Demonstration of C+ L 8.7-THz 7-core multicore EDFA with a single pump laser diode using pump recycling technology
H Takeshita, Y Shimomura… - … Conference on Optical …, 2023 - ieeexplore.ieee.org
An L-band 4.1-THz 7-core signal has been successfully amplified by using recycled pump
light from C-band 4.6-THz 7-core cladding-pumped multicore EDFA. 4.8% of power …
light from C-band 4.6-THz 7-core cladding-pumped multicore EDFA. 4.8% of power …