Eight-dimensional Polarization-ring-switching Modulation Formats
arXiv:1904.06679 · doi:10.1109/LPT.2019.2943400
Abstract
We propose two 8-dimensional (8D) modulation formats (8D-2048PRS-T1 and 8D-2048PRS-T2) with a spectral efficiency of 5.5 bit/4D-sym, where the 8 dimensions are obtained from two time slots and two polarizations. Both formats provide a higher tolerance to nonlinearity by selecting symbols with nonidentical states of polarization (SOPs) in two time slots. The performance of these novel 8D modulation formats is assessed in terms of the effective signal-to-noise ratio (SNR) and normalized generalized mutual information. 8D-2048PRS-T1 is more suitable for high SNRs, while 8D-2048PRS-T2 is shown to be more tolerant to nonlinearities. A sensitivity improvement of at least 0.25 dB is demonstrated by maximizing normalized generalized mutual information (NGMI). For a long-haul nonlinear optical fiber transmission system, the benefit of mitigating the nonlinearity is demonstrated and a reach increase of 6.7% (560 km) over time-domain hybrid four-dimensional two-amplitude eight-phase shift keying (TDH-4D-2A8PSK) is observed.
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Cited by in corpus (5)
- Geometrically-Shaped Multi-Dimensional Modulation Formats in Coherent Optical Transmission Systems
- Analysis and Experimental Demonstration of Orthant-Symmetric Four-dimensional 7 bit/4D-sym Modulation for Optical Fiber Communication
- Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise
- On Shaping Gain of Multidimensional Constellation in Linear and Nonlinear Optical Fiber Channel
- Low-Complexity Geometrical Shaping for 4D Modulation Formats via Amplitude Coding