Scanning-free imaging through a single fiber by random spatio-spectral encoding

TL;DR

This paper introduces a novel method for 2D imaging through a single fiber using random spatio-spectral encoding, eliminating the need for scanners and providing bending-insensitive imaging suitable for endoscopy.

Contribution

The method enables scanner-free 2D imaging through a single fiber by employing a random scattering medium for spectral encoding, enhancing flexibility and robustness in endoscopic imaging.

Findings

Achieves 2D imaging without scanners

Insensitive to fiber bending

Compatible with endoscopic applications

Abstract

We present an approach for two-dimensional (2D) imaging through a single single-mode or multimode fiber without the need for scanners. A random scattering medium placed next to the distal end of the fiber is used to encode the collected light from every imaged pixel with a different random spectral signature. 2D objects illuminated by a white-light source are then imaged from a single measured spectrum at the fiber's proximal end. The technique is insensitive to fiber bending, an advantage for endoscopic applications.