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Conferences > ECOC > 2011 > Tu.3.B > Tu.3.B.4

Demonstration of 2.7-PPB Receiver Sensitivity Using PDM-QPSK with 4-PPM and Unrepeatered Transmission over a Single 370-km Unamplified Ultra-Large-Area Fiber Span

Xiang Liu, S. Chandrasekhar, T. H. Wood, R. W. Tkach, E. C. Burrows, and P. J. Winzer

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Abstract

We demonstrate a record receiver sensitivity of 2.7 photons per bit at 6.23-Gb/s net data rate using PDM-QPSK with 4-ary-pulse-position-modulation. This signal is transmitted over a 370-km unrepeatered ultra-large-area-fiber span with 71.7-dB total loss budget.

© 2011 Optical Society of America

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