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Conferences > NFOEC > 2011 > PDPB > PDPB1
  • Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper PDPB1
  • •https://doi.org/10.1364/NFOEC.2011.PDPB1

Demonstration of Record Sensitivity in an Optically Pre-amplified Receiver by Combining PDM-QPSK and 16-PPM with Pilot-Assisted Digital Coherent Detection

Xiang Liu, T. H. Wood, R. W. Tkach, and S. Chandrasekhar

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Abstract

We propose a power-efficient modulation/detection scheme that combines PDM-QPSK and 16-ary-pulse-position-modulation. A record sensitivity of 3.5 photons per bit at BER=10−3 is experimentally demonstrated at 2.5 Gb/s with digital coherent-detection, outperforming PDM-QPSK by >3 dB.

© 2011 Optical Society of America

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