13.5-Tb/s (135 × 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km using SNR Maximized Second-order DRA in the Extended L-band

Masuda,; Yamazaki,; Sano,; Yoshimatsu,; Kobayashi, Kazuya; Yoshida, Minoru; Miyamoto,; Matsuoka,; Takatori,; Mizoguchi,; Okada, Shima; Hagimoto,; Yamada,; Kamei,

doi:10.1364/ofc.2009.pdpb5

Cited by 11 publications

(5 citation statements)

References 4 publications

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“…One promising way to deal with fiber nonlinearities is to increase the fiber core diameter and as a result decrease the fiber nonlinearity [2,3]. Indeed, most of the recent record breaking transmission systems have used larger and larger effective area fibers for transmission [4][5][6][7][8][9][10]. However, as the fiber core diameter is increased the fiber becomes multimode.…”

mentioning

confidence: 99%

Long distance transmission in few-mode fibers

Yaman¹,

Bai²,

Zhu³

et al. 2010

Opt. Express

169

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Using multimode fibers for long-haul transmission is proposed and demonstrated experimentally. In particular few-mode fibers (FMFs) are demonstrated as a good compromise since they are sufficiently resistant to mode coupling compared to standard multimode fibers but they still can have large core diameters compared to single-mode fibers. As a result these fibers can have significantly less nonlinearity and at the same time they can have the same performance as single-mode fibers in terms of dispersion and loss. In the absence of mode coupling it is possible to use these fibers in the single-mode operation where all the data is carried in only one of the spatial modes throughout the fiber. It is shown experimentally that the single-mode operation is achieved simply by splicing single-mode fibers to both ends of a 35-km-long dual-mode fiber at 1310 nm. After 35 km of transmission, no modal dispersion or excess loss was observed. Finally the same fiber is placed in a recirculating loop and 3 WDM channels each carrying 6 Gb/s BPSK data were transmitted through 1050 km of the few-mode fiber without modal dispersion.

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mentioning

confidence: 99%

Long distance transmission in few-mode fibers

Yaman¹,

Bai²,

Zhu³

et al. 2010

Opt. Express

169

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“…The transmission line consisted of three 80.1-km spans of low-loss and low-nonlinear pure silica core fiber (PSCF) [26], [27] and three in-line dual-band EDFAs. The loss coefficient of PSCF and the loss of an 80.1-km span were 0.160 dB/km and 13.5 dB at 1570 nm, respectively.…”

Section: 1-tbit/s Pdm-16-qam Transmission Experimentsmentioning

confidence: 99%

Ultra-High Capacity Optical Transmission Technologies for 100 Tbit/s Optical Transport Networks

Sano

Kobayashi

Yoshida

et al. 2011

IEICE Trans. Commun.

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SUMMARYThis paper describes ultra-high capacity wavelengthdivision multiplexed (WDM) transmission technologies for 100-Tbit/sclass optical transport networks (OTNs). First, we review recent advances in ultra-high capacity transmission technologies focusing on spectrallyefficient multi-level modulation techniques and ultra-wideband optical amplification techniques. Next, we describe an ultra-high capacity WDM transmission experiment, in which high speed polarization-division multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM), generated by an optical synthesis technique, in combination with coherent detection based on digital signal processing with pilotless algorithms, realize the high spectral efficiency (SE) of 6.4 b/s/Hz. Furthermore, ultrawideband hybrid optical amplification utilizing distributed Raman amplification (DRA) and C-and extended L-band erbium-doped fiber amplifiers (EDFAs) is shown to realize 10.8-THz total signal bandwidth. By using these techniques, 69.1-Tbit/s transmission is demonstrated over 240-km of pure silica-core fibers (PSCFs). Furthermore, we describe PDM 64-QAM transmission over 160 km of PSCFs with the SE of 9.0 b/s/Hz.

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“…For more practical and industrial applications, electrical and microwave components are preferred because of the maturity and stability that they present, in contrast with their optical counterparts. Consequently, wavelength division multiplexing (WDM) schemes have been implemented employing electrical subsystems in the transmitter and/or the receiver, as in coherent WDM [3] or Nyquist WDM [4]. However, to decrease the number of total optical wavelengths, these systems require broadband baseband signals of tens of Gbaud, which limits its performance and increases the cost and difficulty of any practical real-time implementation.…”

Section: Introductionmentioning

confidence: 99%

All-Analogue Real-Time Broadband Filter Bank Multicarrier Optical Communications System

Gutiérrez

Perry

Martin

et al. 2015

J. Lightwave Technol.

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Abstract-This paper studies the key aspects of an optical link which transmits a broadband microwave filter bank multicarrier (FBMC) signal. The work is presented in the context of creating an all-analogue real-time multi-gigabit orthogonal frequency division multiplexing (OFDM) electro-optical transceiver for short range and high capacity data center networks. Passive microwave filters are used to perform the pulse shaping of the bit streams, allowing an orthogonal transmission without the necessity of digital signal processing (DSP). Accordingly, a cyclic prefix that would cause a reduction in the net data rate is not required. An experiment consisting of three orthogonally spaced 2.7 Gbaud quadrature phase shift keyed (QPSK) subchannels demonstrates that the spectral efficiency of traditional DSP-less subcarrier multiplexed (SCM) links can be potentially doubled. A sensitivity of -29.5 dBm is achieved in a 1 kilometer link.

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13.5-Tb/s (135 × 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km using SNR Maximized Second-order DRA in the Extended L-band

Cited by 11 publications

References 4 publications

Long distance transmission in few-mode fibers

Long distance transmission in few-mode fibers

Ultra-High Capacity Optical Transmission Technologies for 100 Tbit/s Optical Transport Networks

All-Analogue Real-Time Broadband Filter Bank Multicarrier Optical Communications System

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