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; S. Chandrasekhar

doi:10.1364/OFC.2011.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/OFC.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

Optical Fiber Communication Conference 2011

Los Angeles, California United States
6–10 March 2011
ISBN: 978-1-55752-906-0

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Postdeadline Session B (PDPB)

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X. Liu, T. H. Wood, R. W. Tkach, and S. Chandrasekhar, "Demonstration of Record Sensitivity in an Optically Pre-amplified Receiver by Combining PDM-QPSK and 16-PPM with Pilot-Assisted Digital Coherent Detection," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper PDPB1.

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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.

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