Demonstration of MIMO-DFS over 100km of unamplified SSMF Link using Active Laser Drift Stabilization and Optimized Probing Codes

TL;DR

This paper demonstrates a method to reduce laser frequency noise impact in long-distance coherent sensing over 100km of fiber by stabilizing the laser and using optimized probing codes.

Contribution

It introduces a stabilization technique combined with optimized probing codes to improve sensing performance over long fiber links.

Findings

Reduced noise floor over 100km of fiber

Effective laser stabilization in the estimated frequency zone

Enhanced sensing accuracy with optimized probing codes

Abstract

We estimate the laser frequency noise impact on coherent sensing using Distributed Fiber Sensing model. By stabilizing the laser in the estimated frequency zone, we demonstrate reduced noise floor over 100km using optimized probing codes