The complexity and the power consumption of digital signal processing are crucial issues in optical transmission systems based on mode division multiplexing and coherent multiple-input multiple-output (MIMO) processing at the receiver. In this paper the inherent characteristic of spatial separation between fiber modes is exploited, getting a MIMO system where joint demultiplexing and detection is based on spatially separated photodetectors. After photodetection, one has a MIMO system with nonlinear crosstalk between modes. The paper shows that the nonlinear crosstalk can be dealt with by a low-complexity and non-adaptive detection scheme, at least in the cases presented in the paper.
Analog nonlinear MIMO receiver for optical mode division multiplexing transmission
SPALVIERI, ARNALDO;BOFFI, PIERPAOLO;PECORINO, SIMONE;BARLETTA, LUCA;MAGARINI, MAURIZIO;GATTO, ALBERTO;MARTELLI, PAOLO;MARTINELLI, MARIO
2013-01-01
Abstract
The complexity and the power consumption of digital signal processing are crucial issues in optical transmission systems based on mode division multiplexing and coherent multiple-input multiple-output (MIMO) processing at the receiver. In this paper the inherent characteristic of spatial separation between fiber modes is exploited, getting a MIMO system where joint demultiplexing and detection is based on spatially separated photodetectors. After photodetection, one has a MIMO system with nonlinear crosstalk between modes. The paper shows that the nonlinear crosstalk can be dealt with by a low-complexity and non-adaptive detection scheme, at least in the cases presented in the paper.| File | Dimensione | Formato | |
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OE2013_NonlinearMIMO_FinalPublished.pdf
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