Polarization-sensitive optical fiber-tip ball resonators for refractive index sensing with optical backscatter reflectometer interrogator

Madina Shaimerdenova, Takhmina Ayupova, Aigerim Nugmanova, Ayazhan Dauletova, Daniele Tosi

Research output: Contribution to journalArticlepeer-review

Abstract

Optical fiber-tip ball resonators are inexpensive devices characterized by a rapid, repeatable, and reliable fabrication process through a fiber splicer. The spectral features of a ball resonator appear as low-finesse interferometer, with an optical backscatter reflectometer (OBR) interrogator. The spectrum changes in amplitude when the external refractive index (RI) varies. In this work, we present a polarization-sensitive method for the detection of spectral changes in ball resonators. We achieved a sensitivity ranging from 366.6 dB/RIU to 6691.6 dB/RIU (refractive index units) on the most sensitive polarization, improving the sensitivity of a standard detection of 18.6%–47.7% without the need of any additional component.

Original languageEnglish
Article number102551
JournalOptical Fiber Technology
Volume64
DOIs
Publication statusPublished - Jul 2021

Keywords

  • Ball resonator
  • Microsphere
  • Optical backscatter reflectometry
  • Optical fiber sensors
  • Polarization sensors
  • Refractive index sensors

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Polarization-sensitive optical fiber-tip ball resonators for refractive index sensing with optical backscatter reflectometer interrogator'. Together they form a unique fingerprint.

Cite this