title: Analog nonlinear MIMO receiver for optical mode division multiplexing transmission.
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.
authors.forename: Arnaldo
authors.initials: A
authors.lastname: Spalvieri
authors.forename: Pierpaolo
authors.initials: P
authors.lastname: Boffi
authors.forename: Simone
authors.initials: S
authors.lastname: Pecorino
authors.forename: Luca
authors.initials: L
authors.lastname: Barletta
authors.forename: Maurizio
authors.initials: M
authors.lastname: Magarini
authors.forename: Alberto
authors.initials: A
authors.lastname: Gatto
authors.forename: Paolo
authors.initials: P
authors.lastname: Martelli
authors.forename: Mario
authors.initials: M
authors.lastname: Martinelli