Optic sensors of high refractive-index responsivity and low thermal cross sensitivity that use fiber Bragg gratings of >80° tilted structures

Kaiming Zhou*, Lin Zhang, Xianfeng F. Chen, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

For the first time to the authors' knowledge, fiber Bragg gratings (FBGs) with >80° tilted structures nave been fabricated and characterized. Their performance in sensing temperature, strain, and the surrounding medium's refractive index was investigated. In comparison with normal FBGs and long-period gratings (LPGs), >80° tilted FBGs exhibit significantly higher refractive-index responsivity and lower thermal cross sensitivity. When the grating sensor was used to detect changes in refractive index, a responsivity as high as 340 nm/refractive-index unit near an index of 1.33 was demonstrated, which is three times higher than that of conventional LPGs. © 2006 Optical Society of America.

Original languageEnglish
Pages (from-to)1193-1195
Number of pages3
JournalOptics Letters
Volume31
Issue number9
Early online date2 Feb 2006
DOIs
Publication statusPublished - May 2006

Bibliographical note

© 2006 The Optical Society. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-31-9-1193. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Keywords

  • fiber Bragg gratings
  • FBGs
  • >80° tilted structures
  • performance
  • sensing temperature
  • strain
  • refractive index
  • refractive-index responsivity
  • thermal cross sensitivity

Fingerprint Dive into the research topics of 'Optic sensors of high refractive-index responsivity and low thermal cross sensitivity that use fiber Bragg gratings of >80° tilted structures'. Together they form a unique fingerprint.

Cite this