Enhanced-backscattering optical fibers for inline interferometers: Applications to biosensing

Daniele Tosi, Wilfried Blanc, Aliya Bekmurzayeva, Marzhan Nurlankyzy, Albina Abdossova, Sabira Seipetdenova, Kuanysh Seitkamal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The interrogation of Rayleigh backscattering in single-mode optical fibers is a key asset for the development of distributed fiber-optic sensors operating in frequency- and time-domain. In order to increase the return signal, fibers with high backscattering have been introduced, exploiting weak random gratings or UV exposure; however the most viable method relies on introducing high doses or nanoparticles directly into the fiber core, which allows reaching scattering increments consistently over 50 dB. In this work, we discuss the use of such fibers for interferometry; exploiting its high backscattering, a short span of enhanced backscattering fiber can act as a random cavity, achieving a semi-stochastic spectrum that can be interrogated with a spectral analyzer. We present some of the recent applications in biosensing, including the detection of poxvirus proteins in wastewater and the detection of retinal biomarkers in tears.

Original languageEnglish
Title of host publicationProceedings - 2024 24th International Conference on Transparent Optical Networks, ICTON 2024
EditorsFrancesco Prudenzano, Marian Marciniak
PublisherIEEE Computer Society
ISBN (Electronic)9798350377309
DOIs
Publication statusPublished - 2024
Event24th International Conference on Transparent Optical Networks, ICTON 2024 - Bari, Italy
Duration: Jul 14 2024Jul 18 2024

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Print)2162-7339

Conference

Conference24th International Conference on Transparent Optical Networks, ICTON 2024
Country/TerritoryItaly
CityBari
Period7/14/247/18/24

Keywords

  • Enhanced Backscattering Fiber
  • Label-Free Biosensors
  • Nanoparticle-Doped Fibers
  • Optical Biosensors
  • Optical Fiber Sensors
  • Rayleigh Scattering

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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