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Proceedings Paper

Nyquist-WDM transmission of 7 x 192 Gb/s PDM 16-QAM signals using high-speed DACs operating at 42 GS/s
Author(s): Shogo Yamanaka; Takayuki Kobayashi; Akihide Sano; Akihiko Matsuura; Yutaka Miyamoto; Munehiko Nagatani; Hideyuki Nosaka
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Paper Abstract

We report Nyquist-wavelength-division-multiplexed (Nyquist-WDM) seven-channel 192-Gb/s polarization-divisionmultiplexed 16-QAM transmission. The transmitter comprises high-speed digital-to-analog converters (DACs) fabricated with 0.5-μm indium phosphide (InP) heterojunction bipolar transistors and an FPGA-based multi-channel digital signal generator, and enables us to perform transmitter-side digital signal processing (DSP) for spectrally efficient WDM transmission. The transmitter generated 24-Gbaud electrical waveforms for optical 16-QAM signals with a digital pre-filter. Using low-loss and low-nonlinear pure silica core fiber, we achieved 25-GHz-spaced seven-channel 192 Gb/s transmission distance of 480 km with a spectral efficiency of 7.17 b/s/Hz.

Paper Details

Date Published: 5 February 2013
PDF: 7 pages
Proc. SPIE 8646, Optical Metro Networks and Short-Haul Systems V, 86460O (5 February 2013); doi: 10.1117/12.2011002
Show Author Affiliations
Shogo Yamanaka, NTT Photonics Labs. (Japan)
Takayuki Kobayashi, NTT Network Innovation Labs. (Japan)
Akihide Sano, NTT Network Innovation Labs. (Japan)
Akihiko Matsuura, NTT Network Innovation Labs. (Japan)
Yutaka Miyamoto, NTT Network Innovation Labs. (Japan)
Munehiko Nagatani, NTT Photonics Labs. (Japan)
Hideyuki Nosaka, NTT Photonics Labs. (Japan)


Published in SPIE Proceedings Vol. 8646:
Optical Metro Networks and Short-Haul Systems V
Werner Weiershausen; Benjamin B. Dingel; Achyut K. Dutta; Atul K. Srivastava, Editor(s)

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