10.16-Peta-bit/s Dense SDM/WDM Transmission over 6-Mode 19-Core Fiber across the C+L Band

Soma, Daiki; Wakayama, Yuta; Beppu, Shohei; Sumita, Seiya; Tsuritani, Takehiro; Hayashi, Tetsuya; Nagashima, Toru; Suzuki, Masatoshi; Yoshida, Masato; Kasai, Keisuke; Takahashi, Hidenori; Igarashi, Koji; Morita, Itsuro

doi:10.1109/jlt.2018.2799380

Cited by 105 publications

(50 citation statements)

References 13 publications

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“…In MDM using FMFs, the modes excited as the basis of transmission channels are linearly polarized (LP) modes [7] since linearly polarized light is used as a light source. Information has been successfully transmitted using multiple-input and multiple-output digital signal processing (MIMO-DSP) technology at the receiving end [8]. It has long been thought that the reason why MIMO-DSP is required is to compensate for the crosstalk caused by the roughness of the core-cladding interface and the macro-and microbending of the fibers.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of true-eigenmode propagation in few-mode fibers by selective LP mode excitation and near-field observation

Yamaguchi

Miura

Kimura

2018

IEICE Electron. Express

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We observed the near-field patterns of light output from fewmode fibers (FMFs) in which an LP mode was selectively excited. It was confirmed from the variation of the intensity profile with the wavelength that the true eigenmodes of a circular core fiber are guided in single-core stepindex and graded-index FMFs. On the other hand, we discovered a new phenomenon that LP 11 modes propagate as eigenmodes oriented along a specific axis in 4-LP mode 12-core FMF. In addition, we confirmed that this phenomenon is not due to the elliptical deformation of the core by observing the NFP and calculating the eigenmodes in an elliptical core using elliptical cylindrical coordinates and the Mathieu function.

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Section: Introductionmentioning

confidence: 99%

Demonstration of true-eigenmode propagation in few-mode fibers by selective LP mode excitation and near-field observation

Yamaguchi

Miura

Kimura

2018

IEICE Electron. Express

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“…Suitable fibers for SDM can be either uncoupled multi-core fibers (MCF) [3], where several single-mode fiber cores are arranged inside one fiber cladding or few-and multi-mode fibers (FMF or MMF) [4] where a single fiber core can support the transmission of several orthogonal fiber modes. Hybrid combinations of the two approaches are also attractive and have been used to demonstrate the highest recorded data-rate in a single fiber to date [5], almost 100 times higher than the record throughput in standard SMFs.…”

Section: Introductionmentioning

confidence: 99%

High Capacity Transmission With Few-Mode Fibers

Rademacher

Luís

Puttnam

et al. 2019

J. Lightwave Technol.

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We experimentally investigate high-capacity fewmode fiber transmission for short and medium-haul optical links. In separate experiments, we demonstrate C + L band transmission of 283 Tbit/s over a single 30 km span and 159 Tbit/s over 1045 km looped transmission in a graded-index three mode fiber. The first experiment reached a data-rate per fiber mode within 90% of the record data-rates reported in the same transmission bands for single-mode fiber. The second experiment demonstrated the feasibility of reaching high data-rates over long distance few-mode fiber transmission, despite strong impairments due to mode-dependent loss and differential mode delay.

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“…This technology, known as space‐division multiplexing, can increase the throughput by transmitting data over individual cores of multicore fibers, and/or orthogonal spatial modes of few‐mode or multimode fibers (MMFs) . With these techniques, a two‐order increase in the throughput is achievable compared to a single‐mode fiber (SMF) . Among the space‐division multiplexing approaches, multiplexing data onto orthogonal spatial modes, known as mode‐division multiplexing (MDM), has the biggest potential for further scaling down cost‐per‐bit and energy‐per‐bit of information transfer.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Broadband Metasurfaces for Fiber Mode‐Multiplexed Communications

Nazemosadat

Mazur

Kruk

et al. 2019

Advanced Optical Materials

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nanophotonic structures [1] avoid absorption losses which drastically enhances the overall performance, [3][4][5][6][7][8][9] especially in the transmission regime. Recently, all-dielectric metasurfaces have reached remarkable efficiencies, often matching or outperforming conventional optical elements. [1] Here, we suggest to broaden the application range of metasurfaces and employ them for mode multiplexing and dynamic control in fiber optics, offering near lossless transmission within the telecom C-and L-bands, [4] which will make metasurfaces a promising technology for mode multiplexers and other applications in optical communications.Optical fiber communications is a key enabling technology in our modern information-centric society. In the past decades, there has been a significant increase in the amount of data transmitted through a fiber, [10] which has been possible by multiplexing light across the physical dimensions of time, wavelength, polarization, and quadratures (amplitude and phase). However, the data rates of existing technologies are rapidly approaching the Shannon limit. [11] To surpass this limit, considerable attention has been given to multiplexing data over the last physical dimension: space. [11][12][13][14] This technology, known as space-division multiplexing, can increase the throughput by transmitting data over individual cores of multicore fibers, [15] and/or orthogonal spatial modes of few-mode or multimode fibers (MMFs). [16,17] With these techniques, a two-order increase in the throughput is achievable compared to a single-mode fiber (SMF). [18] Among the space-division multiplexing approaches, multiplexing data onto orthogonal spatial modes, known as mode-division multiplexing (MDM), has the biggest potential for further scaling down cost-per-bit and energy-per-bit of information transfer. Meanwhile, implementation of MDM requires efficient mode multiplexers and demultiplexers. So far, holographic excitation with spatial light modulators (SLMs), [19] photonic lanterns, [20] integrated devices, [21] and free-space multiplane light conversion, [22] are among the demonstrated techniques for mode multiplexing/demultiplexing. However, there exists a common issue with the currently developed techniques: it is not possible to simultaneously convert each of the two orthogonal polarizations of an input beam to two individual higher-order modes without using some polarization diversity setup, which increases losses and sensitivity to alignment tolerances. Independent conversion of two polarization-multiplexed fundamental modes A subwavelength-thick spatial-mode multiplexer based on a highly transparent all-dielectric Mie-resonant metasurface is demonstrated with a broadband response covering major optical communication wavelength bands. The metasurface is employed to convert simultaneously each orthogonal polarization of LP 01 inputs into individual higher-order TM 01 and TE 01 vectorial modes, without the need of a polarization diversity setup. This is not feasible using current mode multipl...

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10.16-Peta-bit/s Dense SDM/WDM Transmission over 6-Mode 19-Core Fiber across the C+L Band

Cited by 105 publications

References 13 publications

Demonstration of true-eigenmode propagation in few-mode fibers by selective LP mode excitation and near-field observation

Demonstration of true-eigenmode propagation in few-mode fibers by selective LP mode excitation and near-field observation

High Capacity Transmission With Few-Mode Fibers

Dielectric Broadband Metasurfaces for Fiber Mode‐Multiplexed Communications

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