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Experimental investigation of 84-Gb/s and 112-Gb/s polarization-switched quadrature phase-shift keying signals

: Fischer, J.K.; Molle, L.; Nölle, M.; Gross, D.D.; Schmidt-Langhorst, C.; Schubert, C.

Postprint (1.4 MByte; PDF; )

Optics Express 19 (2011), No.26, pp.667-672
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer HHI ()

We experimentally investigate 28-GBd (84-Gb/s) and 37.3-GBd (112-Gb/s) polarization-switched quadrature phase-shift keying (PS-QPSK) signals. In single-channel transmission experiments over up to 12500 km ultra large effective area fiber, we compare their performance to that of polarization-division multiplexing quadrature phase-shift keying (PDM-QPSK) signals at the same bit rates. The experimental results show that PS-QPSK not only benefits from its better sensitivity but also offers an increased tolerance to intra-channel nonlinearities.