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22 January 2010 DQPSK for metro networks
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Abstract
This paper investigates DQPSK transport using both simulation and experimental results from our 100G testbed. We examine 56 Gb/s single polarization (single-pol) RZ-DQPSK and 112 Gb/s polarization multiplexing (POL-MUX) RZDQPSK with 12 Gb/s OOK aggressor channels and a variety of dispersion management maps using AllWave® zero water peak (ZWP) fiber. Although a number of studies of 40 Gb/s line rates within 10 Gb/s networks have been reported, there has been little with respect to 28 Gbaud DQPSK formats. We quantify the OSNR penalty due to nonlinearities of these hybrid optical links. Using a nominal span loss of 22 dB and different span lengths while keeping the dispersion compensation per span constant and the loss per span constant allows a direct examination of the impact of the residual dispersion per span (RDPS) on the nonlinear penalty in the DQPSK channel. We vary compensation from 90% - 110% (of total dispersion) across 8 spans (-119 ps/nm - +153 ps/nm). We report the required OSNR to achieve a non-FEC BER of 10-4 versus RDPS for both single- and dual-polarization (dual-pol) RZ-DQPSK. Experimental data is validated against RSoft OptSim simulations.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andy Stark, Yu-Ting Hsueh, Steven Searcy, Cheng Liu, Alan McCurdy, Robert Lingle Jr., Mark Filer, Sorin Tibuleac, G.-K. Chang, and Stephen E. Ralph "DQPSK for metro networks", Proc. SPIE 7621, Optical Metro Networks and Short-Haul Systems II, 76210L (22 January 2010); https://doi.org/10.1117/12.842548
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