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Conferences > NFOEC > 2011 > JThA > JThA039

Comparison of RZ and NRZ Formats in 112-Gb/s PDM-QPSK Long Haul Coherent Transmission Systems

Chongjin Xie, Greg Raybon, and S. Chandrasekhar

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Abstract

We show that 112-Gb/s PDM-QPSK coherent transmission systems with RZ pulse shape have better tolerance to ROADM filtering than NRZ, and time-interleaved RZ-PDM-QPSK outperform NRZ-PDM-QPSK in nonlinear transmission even with tight filtering.

© 2011 Optical Society of America

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