Spatial optical mode demultiplexing as a practical tool for optimal transverse distance estimation
Optics
2020-08-06 v1 Instrumentation and Detectors
Abstract
We present the experimental implementation of simultaneous spatial multimode demultiplexing as a distance measurement tool. We first show a simple and intuitive derivation of the Fisher information in the presence of Poissonian noise. We then estimate the distance between two incoherent beams in both directions of the transverse plane, and find a perfect accordance with theoretical prediction, given a proper calibration of the demultiplexer. We find that, even though sensitivity is limited by the cross-talks between channels, we can perform measurements in 2 dimensions much beyond Rayleigh limit with a large dynamic.
Keywords
Cite
@article{arxiv.2008.02157,
title = {Spatial optical mode demultiplexing as a practical tool for optimal transverse distance estimation},
author = {Pauline Boucher and Claude Fabre and Guillaume Labroille and Nicolas Treps},
journal= {arXiv preprint arXiv:2008.02157},
year = {2020}
}