80km IM-DD Transmission for 100 Gb/s per Lane Enabled by DMT and Nonlinearity Management

Yan, Weizhen; Li, Lei; Liu, Bo; Chen, Hao; Tao, Zhenning; Tanaka, Toshiki; Takahara, Tomoo; Rasmussen, Jens C.; Drenski, Tomislav

doi:10.1364/ofc.2014.m2i.4

Cited by 35 publications

(25 citation statements)

References 1 publication

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“…In these graphs, each point represents one sub-carriers and shows how many bits per symbol it carries. To achieve 1, 2, .. 6 bits per symbol, we used BPSK, QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, respectively [20], [22].…”

Section: A Transmitter Frequency Responsementioning

confidence: 99%

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High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region

Liu

Chen

et al. 2015

J. Lightwave Technol.

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Abstract-The 2-µm wave band is emerging as a potential new window for optical telecommunications with several distinct advantages over the traditional 1.55µm region. First of all, the Hollow-Core Photonic Band Gap Fiber (HC-PBGF) is an emerging transmission fiber candidate with ultra-low nonlinearity and lowest latency (0.3% slower than light propagating in vacuum) that has its minimum loss within the 2-µm wavelength band. Secondly, the Thulium-doped fiber amplifier that operates in this spectral region provides significantly more bandwidth than the Erbium-doped fiber amplifier. In this paper we demonstrate a single-channel 2-µm transmitter capable of delivering >52 Gbit/s data signals, which is twice the capacity previously-demonstrated. To achieve this we employ discrete multi-tone (DMT) modulation via direct current modulation of a Fabry-Perot semiconductor laser. The 4.4-GHz modulation bandwidth of the laser is enhanced by optical injection locking, providing up to 11 GHz modulation bandwidth. Transmission over 500-m and 3.8-km samples of HC-PBGF is demonstrated.

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Section: A Transmitter Frequency Responsementioning

confidence: 99%

“…First, we used DMT with adaptive bit loading, which was recently shown to enable >100 Gb/s transmission at both 1310 nm and 1550 nm [20] spectral regions. This new approach is implemented using DSP and leads to maximized capacity for a given bandwidth and signal quality.…”

Section: Introductionmentioning

confidence: 99%

High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region

Liu

Chen

et al. 2015

J. Lightwave Technol.

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“…Intensity modulation direct detection (IM-DD) has long been regarded as the most costeffective solution for short-reach transmission. However, for long-haul (≥80 km) high-capacity (≥40 Gb/s) transmission, optical amplification is required in IM-DD systems to ensure sufficient receiver sensitivity [1]. By contrast, digital coherent receiver using a high-power local oscillator (LO) and powerful digital signal processing (DSP) outperforms direct detection in terms of the receiver sensitivity, system reach and transmission capacity [2].…”

Section: Introductionmentioning

confidence: 99%

Nonamplified 100Gbps doubly differential QPSK optical signal transmission over 80 km SSMF without carrier recovery

Zhang

Sánchez

Ali

et al. 2017

2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)

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“…Direct-modulation direct-detection (DM-DD) systems using high-order modulation formats are becoming increasingly attractive to address the above-mentioned issue [3][4][5][6][7][8]. They offer large capacities (e.g., 117 Gbit/s [4]) with minimum optical hardware (e.g., directly modulated laser at the transmitter side and a single photodiode at the receiver side), promising both a low-cost and compact solution.…”

Section: Introductionmentioning

confidence: 99%

Discrete Multitone Format for Repeater-Less Direct-Modulation Direct-Detection Over 150 km

Liu

Kelly

O’Carroll

et al. 2016

J. Lightwave Technol.

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-High-capacity and low-cost repeater-less transmission beyond 50 km is of interest for the next-generation inter-data center communications. Transmission over such relatively long distance generally requires transmission in the 1550-nm low-loss telecom band that is, however, impaired by chromatic dispersion. Here, we study the performance of the direct modulation direct detection (DM-DD) system using the discrete multi-tone (DMT) format for repeater-less transmission through up to 150 km of a standard single mode fiber (SMF-28) using the 1550-nm band. The achievable capacity for two different types of directly modulated lasers is studied experimentally and compared with that achievable using chirp-free modulation using a push-pull LiNbO3 Mach-Zehnder external modulator (MZM). The benefit of using a larger bandwidth signal is found to diminish as the transmission distance increases. 28 and 25 Gbit/s signal transmission (Bit Error Ratio, BER < 3.8×10 -3 ) over 50 km and 75 km are achieved using just 8-GHz modulation-bandwidth.

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80km IM-DD Transmission for 100 Gb/s per Lane Enabled by DMT and Nonlinearity Management

Cited by 35 publications

References 1 publication

High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region

High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region

Nonamplified 100Gbps doubly differential QPSK optical signal transmission over 80 km SSMF without carrier recovery

Discrete Multitone Format for Repeater-Less Direct-Modulation Direct-Detection Over 150 km

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