105.1 Tb/s Power-Efficient Transmission over 14,350 km using a 12-Core Fiber

Turukhin, A.; Sinkin, O. V.; Batshon, Hussam G.; Zhang, H.; Sun, Yu; Mazurczyk, M.; Davidson, Carl; Cai, J.-X.; Bolshtyansky, Maxim; Foursa, D. G.; Pilipetskii, A.N.

doi:10.1364/ofc.2016.th4c.1

Cited by 59 publications

(21 citation statements)

References 3 publications

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“…Zhao et al deduced the theoretical analysis result about the minimum number of spans required for a 3000 km QSM system [45]. More demonstrations such as transmission distance reach 14,350 km by using 12 core fiber were also reported [46]. E. Ip et al demonstrated a WDM and MDM transmission with 146 channels and 3 linear polarized (LP) modes over 500 km.…”

Section: Sdm and Frequency Domain Equalization (Fde)mentioning

confidence: 99%

Advanced DSP for Coherent Optical Fiber Communication

Zhao

Liu

2019

Applied Sciences

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In this paper, we provide an overview of recent progress on advanced digital signal processing (DSP) techniques for high-capacity long-haul coherent optical fiber transmission systems. Not only the linear impairments existing in optical transmission links need to be compensated, but also, the nonlinear impairments require proper algorithms for mitigation because they become major limiting factors for long-haul large-capacity optical transmission systems. Besides the time domain equalization (TDE), the frequency domain equalization (FDE) DSP also provides a similar performance, with a much-reduced computational complexity. Advanced DSP also plays an important role for the realization of space division multiplexing (SDM). SDM techniques have been developed recently to enhance the system capacity by at least one order of magnitude. Some impressive results have been reported and have outperformed the nonlinear Shannon limit of the single-mode fiber (SMF). SDM introduces the space dimension to the optical fiber communication. The few-mode fiber (FMF) and multi-core fiber (MCF) have been manufactured for novel multiplexing techniques such as mode-division multiplexing (MDM) and multi-core multiplexing (MCM). Each mode or core can be considered as an independent degree of freedom, but unfortunately, signals will suffer serious coupling during the propagation. Multi-input–multi-output (MIMO) DSP can equalize the signal coupling and makes SDM transmission feasible. The machine learning (ML) technique has attracted worldwide attention and has been explored for advanced DSP. In this paper, we firstly introduce the principle and scheme of coherent detection to explain why the DSP techniques can compensate for transmission impairments. Then corresponding technologies related to the DSP, such as nonlinearity compensation, FDE, SDM and ML will be discussed. Relevant techniques will be analyzed, and representational results and experimental verifications will be demonstrated. In the end, a brief conclusion and perspective will be provided.

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Section: Sdm and Frequency Domain Equalization (Fde)mentioning

confidence: 99%

Advanced DSP for Coherent Optical Fiber Communication

Zhao

Liu

2019

Applied Sciences

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“…As an alternative to parallel core transmission, transmission experiments over serially connected cores of an MCF were reported [29,30]. In a bi-directional transmission experiment over a 16-core fiber, eight cores were connected in series to transmit in one direction and the remaining eight cores were connected in series to transmit in the opposite direction.…”

Section: Partial Recirculating Loop Systemmentioning

confidence: 99%

“…This yielded a serially connected bi-directional 880-km (=55 km  8 cores  2 directions) transmission line [29]. In another experiment, 12 cores of a 12-core MCF were connected in series to construct a span of 552 km (=46 km  12 cores), and a recirculating loop experiment was conducted with this serially-connected span [30]. The configurations of these experiments are simple and require few optical components.…”

Section: Partial Recirculating Loop Systemmentioning

confidence: 99%

Long-Haul Dense Space-Division Multiplexed Transmission Over Low-Crosstalk Heterogeneous 32-Core Transmission Line Using a Partial Recirculating Loop System

Mizuno

Shibahara

et al. 2017

J. Lightwave Technol.

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In this paper, we present long-haul 32-core dense space division multiplexed (DSDM) unidirectional transmission over a single-mode multicore transmission line. We developed a low-crosstalk heterogeneous 32-core fiber with a square lattice arrangement, and a novel partial recirculating loop system. The span crosstalk of the 51.4-km 32-core transmission line was less than −34.5 dB. This allowed the transmission of polarization division multiplexed 16 quadrature amplitude modulation (PDM-16QAM) signals through all 32-cores over a long distance exceeding a thousand km. We demonstrate 32-core DSDM 20 wavelength division multiplexed (WDM) PDM-16QAM transmission over 1644.8 km with a high aggregate spectral efficiency of 201.46 b/s/Hz. Additionally, we examine the effect of crosstalk on the transmission performance of each core, and show Manuscript received June, 2016.

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“…1. Figure 3 summarizes how EXAT has developed and evolved for the last nine years since 2008 as well as major research activities around the world [9]- [40]. It should be noted that outside Japan, research has been more focused on FMFs, and most MCFs including FM-MCFs have been designed and fabricated in Japan.…”

Section: Exat Initiativementioning

confidence: 99%