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Realizing High Sensitivity at 40 Gbit/s and 100 Gbit/s

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We experimentally investigate modulation formats for realizing high data rate and high power sensitivity using coherent reception with low noise-figure optical preamplification. 40 Gbit/s PS-QPSK exhibits a sensitivity of 4.3 photons/bit while 100 Gbit/s PDM-QPSK exhibits a sensitivity of 5.3 photons/bit at 3.8 ⨉ 10-3 BER.

© 2012 Optical Society of America

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