Analyzing the sensitivity of a novel gas sensor based on photonic crystal fiber using finite-difference method

Wen Wen Gu, Jian Lin Zhao, Li Cui, Jian Ping Hou

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A new structure photonic crystal fiber (PCF) aiming for high sensitivity gas detection is proposed. A full-vectorial finite-difference method is used to analyze the relative sensitivity in different structure PCF. A standard eigen-value problem from Maxwell's equation can be solved by the method directly, and the propagation constants, electric fields and magnetic fields of the modes can also be obtained through the method. The relative sensitivity of three structures as a function of the fiber parameters was calculated at the wavelength of 1.3312 μm. And the relative sensitivity of the PCF at different wavelengths was given. The new structure PCF was proved to have higher relative sensitivity than the typical index-guide PCF, and is very suitable for gas sensor.

Original languageEnglish
Pages (from-to)94-98
Number of pages5
JournalGuangzi Xuebao/Acta Photonica Sinica
Volume36
Issue number1
StatePublished - Jan 2007

Keywords

  • Finite difference frequency domain ( FDFD)
  • Gas sensor
  • Photonic crystal fiber (PCF)
  • Relative sensitivity

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