Memorias de investigación
Communications at congresses:
Detection Limits of Optical Autocorrelations with a CDM Interrogator for Overlapping FBG Spectra
Year:2019

Research Areas
  • Circuit of instrumentation with sensorial photons,
  • Sensor networks

Information
Abstract
Massive optical sensor networks gained a lot of attention in recent years. They offer new advances in the fields of smart structures and health monitoring. All serial optical sensor networks rely on multiplexing techniques that provide huge amounts of sensors in a single optical fiber. Wavelength-division Multiplex (WDM) which has been established in many applications, is restricted to the spectral width of the used light source that needs to be shared by several non-overlapping Fiber-Bragg-Grating (FBG) spectra. Time-division Multiplex (TDM) uses short impulses and a different optical path length between all optical sensors, to distinguish each single FBG. Short impulses lead to a low Signal-to-Noise Ratio (SNR). Optical Frequency Domain Reflectometry (OFDR) offers a high spatial resolution of FBGs within a short fiber length. This contribution deals with a Code-division Multiplex (CDM) interrogation technique that provides numerous sensors in a single optical fiber, a better SNR, and a long range of distributed sensing points. It requires codes with good autocorrelation behavior which is characterized by certain criteria. The detectable criteria are limited which narrows significantly a search for best possible codes for the interrogation system.
International
Si
Congress
2019 International Interdisciplinary PhD Workshop (IIPhDW)
960
Place
Wismar (Germany)
Reviewers
Si
ISBN/ISSN
978-1-7281-0423-2
10.1109/IIPHDW.2019.8755427
Start Date
15/11/2019
End Date
17/11/2019
From page
106
To page
109
2019 International Interdisciplinary PhD Workshop (IIPhDW)
Participants
  • Autor: Marek Götten . UPM
  • Autor: Steffen Lochmann Hochschule Wismar
  • Autor: Andreas Ahrens Hochschule Wismar
  • Autor: Cesar Benavente Peces UPM

Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Audiovisual y Comunicaciones