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We demonstrate a polarization-managed 8-dimensional modulation format that is time domain coded to reduce inter-channel nonlinearity. Simulation results show a 2.33 dB improvement in maximum net system margin (NSM) relative to polarization multiplexed (PM)-BPSK, and a 1.0 dB improvement relative to time interleaved return to zero (RZ)-PM-BPSK, for a five(More)
100 Gb/s end-to-end broadband optical solutions are attractive to cope with the increasing demand for capacity. Polarization-division-multiplexed (PDM) quaternary-phase-shift-keying (QPSK) paired with coherent detection has been found to be promising for upgrading optical legacy systems based on 50 GHz wavelength slots thanks to its high spectral efficiency(More)
Eighty-one channels spaced by 50GHz and modulated at 40Gbit/s are transmitted over 11520km, thanks to RZ PDM-BPSK modulation, coherent detection, and a new large effective area fibre. Introduction Within a given amplifier bandwidth, the capacity of an optical system is simply proportional to the information spectral density (ISD). The ISD of commercial(More)
We investigate the potential of 100Gb/s polarization division multiplexed (PDM-) quadrature phase shift keying (QPSK) paired with coherent detection to enable the future capacity upgrade of current networks designed for 10Gb/s non-return to zero (NRZ) on-off keying data. We experimentally assess the tolerance to nonlinear effects of such a solution over(More)
In this paper we describe single stage and two-stage MMIC power amplifier data at Ka-band. An extremely high P1dB power density of 700 mW/mm and 571 mW/mm were measured for the 1-stage and 2-stage GaAs HEMT MMIC amplifiers respectively. When biased for optimal IP3, 4.5 W/mm and 2.1 W/mm were achieved respectively. The performance of the latter 2-stage MMIC(More)
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