Mode-Multiplexed Full-Field Reconstruction Using Direct and Phase Retrieval Detection

TL;DR

This paper demonstrates a method for full-field reconstruction of six spatial and polarization modes over a 30-km multimode fiber using intensity-only measurements, effectively handling modal dispersion and mode-dependent loss.

Contribution

It introduces a novel mode-multiplexed reconstruction technique that operates without optical carriers or local oscillators, advancing fiber imaging capabilities.

Findings

Successful reconstruction over 30 km fiber

Effective handling of modal dispersion

Robustness to mode-dependent loss

Abstract

We realize mode-multiplexed full-field reconstruction over six spatial and polarization modes after 30-km multimode fiber transmission using intensity-only measurements without any optical carrier or local oscillator at the receiver or transmitter. The receiver's capabilities to cope with modal dispersion and mode dependent loss are experimentally demonstrated.