A5083372537- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photonic Crystals and Applications
- GaN-based semiconductor devices and materials
- Water Quality Monitoring and Analysis
- Surface Modification and Superhydrophobicity
- Silicon and Solar Cell Technologies
- Ga2O3 and related materials
- Solidification and crystal growth phenomena
- Silicon Carbide Semiconductor Technologies
- Intermetallics and Advanced Alloy Properties
- Semiconductor materials and interfaces
- Advanced Scientific Research Methods
- Electromagnetic Effects on Materials
- Semiconductor materials and devices
- Material Properties and Processing
- Reproductive Health and Contraception
- Optical Coatings and Gratings
- Indoor Air Quality and Microbial Exposure
Sumitomo Electric Industries (Japan)
2015-2025
Ryukoku University
2024
Sumitomo Electric Industries (United States)
2010-2018
Tokyo City University
2013
Kyoto University
2008-2009
Tokuyama (Japan)
2008-2009
Shibuya (Japan)
2008
Central Glass (Japan)
1994
Over 10 peta-bit/s transmission has been experimentally demonstrated for the first time using 11.3-km-length low-DMD 6-mode 19-core fibre across C+L band. Q-factors of all 84,246 SDM/WDM channels modulated with 12-Gbaud DP-64QAM/16QAM exceeded assumed FEC limits.
Space-division multiplexing (SDM) is an attractive technique for dramatically enhancing the transmission capacity in a single optical fiber. Recently, ultradense SDM experiments with spatial multiplicity of over 100 have been reported by using few mode multicore fibers (FM-MCFs). Considering maximum around Tb/s single-mode single-core fiber experiments, FM-MCF more than channels expected to reach 10 peta-b/s; however, has limited 2 peta-b/s. In this paper, we demonstrate 739 WDM 12-Gbd dual...
We demonstrate transmission of 368-WDM-38-core-3-mode × 24.5-GBaud 64-and 256-QAM signals over 13 km. Record data-rate and spectral-efficiency 1158.7 b/s/Hz were enabled by a low DMD 38-core-3-mode fiber with high uniformity amongst cores.
It was experimentally and theoretically confirmed for the first time that inter-core crosstalk can be varied more than 20dB depending on bending radius. Simulation results based coupled-mode equation with equivalent index model are in good agreement measurement results.
We installed a multi-core fiber (MCF) cable in underground tunnels city Italy, without significant crosstalk degradation uncoupled MCFs, and with the lowest-ever spatial mode dispersion randomly-coupled MCFs.
We present experimental transmission results for a novel 6-core coupled-core fibre with 125 μm cladding diameter. transmit combined 2-polarization, 6-SDM and 30-WDM channels over distance of 1705 km, spectral-efficiency-distance product 30690 bit/s/Hz km.
A world record capacity 118.5 Tbit/s transmission through optical fiber with a 125 micron cladding diameter was achieved using low loss and 316 km-long full space division multiplexing link incorporating multiple vendor technologies.
We developed a randomly-coupled 19-core fiber with standard 125-µm cladding diameter spatial mode dispersion of 10.8ps/km, enabling data rate 1.7 Pb/s, the highest reported amongst optical fibers diameter.
Data rates in optical networks have grown exponentially recent decades and are expected to grow beyond the fundamental limits of current standard single-mode fiber networks. As such, novel transmission technologies required sustain this growth, space-division multiplexing provides most promising candidate scale capacity a way that is also cost-effective. For fabrication deployment, it highly beneficial use fibers with cladding diameter. Here we demonstrate petabit-per-second-class data using...
We demonstrated simultaneous usage of 228 spatial channels (effectively) within a strand fiber. fabricated 13-km 39-core 3-mode fiber and constructed bi-directional space division multiplexing (SDM) transmission setup by using cascaded multiplexers on both ends. Aggregated intercore crosstalk return loss the system were below -35 above 31 dB, respectively, over C L bands. The feasibility SDM was investigated 10 GBaud, 37.38-Gb/s dual-polarization QPSK signals at 1550 nm coherent detection...
This paper describes a six-mode 19-core fiber with 114 spatial modes, which was designed and fabricated for weakly-coupled mode-division-multiplexed (MDM) transmission over uncoupled cores. The 19 identical graded-index cores were packed on hexagonal lattice 62-μm pitch in ~318-μm-diameter cladding. cladding diameter is large, but still mechanically reliable by assuming 2% proof test 40-mm minimum bend radius. inter-core crosstalk negligibly suppressed the calculation indicated that 50-μm...
We demonstrate cladding-pumped six-core Erbium-doped fiber amplifiers (EDFAs) using two different pump coupling schemes: edge-coupled and side-coupled pumping, where a single multimode laser diode can be applied to all cores. Using in-line EDFAs at the input output of 31-km coupled-six-core fiber, we realized 465-km space-division multiplexing wavelength division transmission in recirculating loop achieved spectral efficiency 18 bits/s/Hz. Through EDFA produced >18-dBm power per core had...
High capacity transmission with a data rate over 10.66 Pb/s is demonstrated in 13 km, 38-core-3-mode few-mode multi-core fiber. This was achieved single optical comb source to generate 368 × 24.5 GBaud 64- or 256-quadrature-amplitude-modulated signals 25 GHz wavelength channel grid combination fiber high uniformity amongst cores. We investigated essential characteristics and found that mode-dependent loss strongly decreases the achievable rates some cores, while we did not observe...
Design and fabrication results of a 6-mode 19-core fiber with the highest relative core multiplicity factor 30 for weakly-coupled mode-multiplexed uncoupled-core-multiplexed transmission are detailed. Technical challenges long-haul also discussed.
In this letter, we experimentally demonstrate resonant-wavelength control of a series 16 nanocavities in two-dimensional photonic crystal slab structure by nanometer-order variation the lattice constants and air-holes sizes. The cavities show linear dependence on these parameters, 1-nm increase constant or air-hole size leading to 4.2-nm 1.56-nm decrease resonant wavelength, respectively. These experimental results are good agreement with finite-difference time-domain calculations have small...
Propagation characteristics of seven-core fiber were investigated for multiplexed signals spatial-division and wavelength-division. Effect chromatic dispersion inter-core crosstalk evaluated 5-km by using 10-Gbit/s channels.
We show combined SDM/WDM transmission over a deployed and cabled 4-core coupled-core fibers distances up to 4014 km for QPSK 2768 16QAM signals. The results confirm the technical viability of in field.
We measured the impulse response of coupled-core pairs with pitch between 12.2-μm and 28.1-μm to find maximum number cores that can be placed in a multi-core fiber shortest response.
We evaluate 19-core randomly-coupled multi-core fiber using swept wavelength interferometry in the O-, E-, C- and L-bands. show a differential mode delay reduction when unspooling increased full-mixing length at shorter wavelengths.
We report on a measurement method for the effective area of few-mode fiber. derived transform equation between near-field pattern and far-field generalized circularly-asymmetric higher-order modes cylindrical core, enabled using high-dynamic-range scan technique low-crosstalk mode multiplexer. The measured values agreed well with that were numerically predicted finite-element from refractive index profile, when modal crosstalk was suppressed.