Generation and Transmission of 21.4-Gbaud PDM 64-QAM Using a Novel High-Power DAC Driving a Single I/Q Modulator
Journal of Lightwave Technology, Vol. 30, Issue 4, pp. 532-536 (2012)
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Abstract
We generate a single-carrier 21.4-Gbaud polarization-division-multiplexed (PDM) 64-ary quadrature-amplitude-modulated (QAM) signal (256.8-Gb/s line rate) using a single in-phase/quadrature (I/Q) optical modulator driven by 8-level electrical waveforms from a novel high-power digital-to-analog converter (DAC). We measure a required optical signal-to-noise ratio of 29.5 dB (0.1-nm reference bandwidth; $10-3 bit-error rate), 4.6-dB off the theoretical limit. Using ultra-large-area fiber, we achieve 400-km single-channel transmission. The DAC was also used to obtain excellent results with quadrature-phase-shift-keyed and 16-QAM signals at 21.4 Gbaud.
© 2011 IEEE
Citation
Alan H. Gnauck, Peter J. Winzer, Agnieszka Konczykowska, Filipe Jorge, Jean-Yves Dupuy, Muriel Riet, Gabriel Charlet, B. Zhu, and David W. Peckham, "Generation and Transmission of 21.4-Gbaud PDM 64-QAM Using a Novel High-Power DAC Driving a Single I/Q Modulator," J. Lightwave Technol. 30, 532-536 (2012)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-30-4-532
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