Mehrauflösungsdetektion von Glasfaserereignissen

Details

Veröffentlichungs-Nr.

EP3595195

Aktenzeichen

EP18305920

Anmeldetag

10. Juli 2018

Veröffentlichung

12. März 2025

Erteilung

12. März 2025

Rechtsraum

EP

IPC

H04B10/071G01M11/08

Abstract

A multi-resolution optical sensing system has a transmitter that injects modulated optical signals into an optical fiber having distributed optical reflectors, a receiver that processes corresponding reflected optical signals to generate (e.g., differential phase or state of polarization) monitoring data corresponding to selected locations along the fiber, and a controller that determines the selected locations and processes the monitoring data to detect fiber events. The controller can instruct the receiver to generate data for different subsets of selected locations having different average spatial resolution levels at different times. In this way, the controller can monitor the entire optical fiber at a relatively low average spatial resolution level to detect fiber events and then increase the average spatial resolution near each detected fiber event to improve the accuracy of locating the fiber event, thereby enabling accurate detection of fiber events anywhere along the optical fiber using conventional digital-signal-processor technology.

Anmelder

Firma

Nokia Technologies Oy

Land

🇫🇮 Finnland

Fachgebiete