Nyquist-WDM transmission of 7 x 192 Gb/s PDM 16-QAM signals using high-speed DACs operating at 42 GS/s

Shogo Yamanaka; Takayuki Kobayashi; Akihide Sano; Akihiko Matsuura; Yutaka Miyamoto; Munehiko Nagatani; Hideyuki Nosaka

doi:10.1117/12.2011002

5 February 2013 Nyquist-WDM transmission of 7 x 192 Gb/s PDM 16-QAM signals using high-speed DACs operating at 42 GS/s

Shogo Yamanaka, Takayuki Kobayashi, Akihide Sano, Akihiko Matsuura, Yutaka Miyamoto, Munehiko Nagatani, Hideyuki Nosaka

Proceedings Volume 8646, Optical Metro Networks and Short-Haul Systems V; 86460O (2013) https://doi.org/10.1117/12.2011002
Event: SPIE OPTO, 2013, San Francisco, California, United States

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.

Citation Download Citation

Shogo Yamanaka, Takayuki Kobayashi, Akihide Sano, Akihiko Matsuura, Yutaka Miyamoto, Munehiko Nagatani, and Hideyuki Nosaka "Nyquist-WDM transmission of 7 x 192 Gb/s PDM 16-QAM signals using high-speed DACs operating at 42 GS/s", Proc. SPIE 8646, Optical Metro Networks and Short-Haul Systems V, 86460O (5 February 2013); https://doi.org/10.1117/12.2011002

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