100 &amp;#x00D7; 120-Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection

Sano, Akira; Kobayashi, Takayuki; Matsuura, A.; Yamamoto, Shuto; Yamanaka, S.; Yoshida, Eiji; Miyamoto, Yutaka; Matsui, Masanao; Mizoguchi, Masahiro; Mizuno, Takayuki

doi:10.1109/ecoc.2010.5621382

Cited by 27 publications

(14 citation statements)

References 4 publications

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“…The highest SE of 10 b/s/Hz was demonstrated by using 14 Gbit/s PDM 128-QAM signal (1 Gbaud) with 1.4-GHz channel spacing [13]. In 100-Gbit/s/ch-class transmission, 9 b/s/Hz was realized by using 120-Gbit/s/ch PDM 64-QAM modulation with 12.5-GHz channel spacing [14] as is described in Sect. 4.…”

Section: Large Capacity Transmission Technologiesmentioning

confidence: 97%

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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Section: Large Capacity Transmission Technologiesmentioning

confidence: 97%

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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“…100 Gbps polarizationmultiplexed quadrature phase shift keying (PM-QPSK) systems are now commercially available [1,2]. High-order quadrature amplitude modulation (QAM) formats are being extensively investigated, in order to pursue higher SE [3][4][5][6]. However, advanced modulation formats, together with complex digital signal processing (DSP) implementation, not only require high optical signal-tonoise ratio (OSNR), but also become more sensitive to fiber nonlinear effects.…”

Section: Introductionmentioning

confidence: 99%

Subcarrier multiplexing based self-heterodyne coherent detection for PM-16QAM format

Jia

Zhou

et al. 2015

Optics Communications

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“…To keep the same baud rate, which is feasible for today's technology, PDM-16 QAM is considered as another promising candidate for doubling the bit rate per channel, although its implementation will face the challenge of increasing the complexity and cost of the transmitter as well as the computational power consumed by DSP at the receiver. Besides, its transmission distance is limited because of the shortened Euclidean distance between adjacent symbols [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Transmission of 200 G PDM-CSRZ-QPSK and PDM-16 QAM With a SE of 4 b/s/Hz

Dong

Chien

et al. 2013

J. Lightwave Technol.

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We have realized the first field transmission of 8 216.8-Gb/s Nyquist wavelength-division-multiplexing (N-WDM) signals over 1750-km G.652 fiber consisting of 950-km real and 800-km lab fibers with erbium-doped fiber amplifier (EDFA)-only amplification. The average loss per span is 21.6 dB. Each channel is modulated with 54.2-Gbaud (216.8-Gb/s) polarization-division-multiplexing carrier-suppressed return-to-zero quadrature-phase-shift-keying (PDM-CSRZ-QPSK) data on a 50-GHz grid giving a record spectral efficiency (SE) of 4 b/s/Hz. Digital post filtering and 1-bit maximum likelihood sequence estimation (MLSE) are introduced into the offline digital signal processing (DSP) at the receiver to suppress noise, linear crosstalk and filtering effects. We have also investigated the co-transmission of 200 G PDM-CSRZ-QPSK and 200 G PDM 16-ary quadrature-amplitude-modulation (PDM-16 QAM) signals on a 50-GHz grid, and found that PDM-CSRZ-QPSK signals have better bit-error-rate (BER) performance for both back-to-back and 700-km transmission cases. Meanwhile, PDM-16 QAM signals are subject to larger crosstalk from the neighboring Nyquist QPSK channels.

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100 × 120-Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection

Cited by 27 publications

References 4 publications

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

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

Subcarrier multiplexing based self-heterodyne coherent detection for PM-16QAM format

Transmission of 200 G PDM-CSRZ-QPSK and PDM-16 QAM With a SE of 4 b/s/Hz

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