Sub-pixel algorithms on linear-array detector grating spectrometer

Chuan Qin, Jianlin Zhao, Biqiang Jiang, Dexing Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The spectrum of Gauss apodized fiber Bragg grating (FBG) is analyzed by using transfer matrix method, and the basic principles of sub-pixel curve fitting algorithms including mass center, Gauss and full-width-at-half-maximum (FWHM) are discussed. Based on this, simulation and experimental results are given to compare the three curve fitting algorithms. The results reveal that in simulation, mass center fitting method with an accuracy of 13pm while in experiment, FWHM fitting method with an accuracy of 23pm provides a better match to the actual curve. The research achievements have been applied on the prototype of linear-array detector grating spectrometer and have potential market in portable FBG interrogation field.

Original languageEnglish
Title of host publicationAdvanced Sensor Systems and Applications V
DOIs
StatePublished - 2012
EventAdvanced Sensor Systems and Applications V - Beijing, China
Duration: 5 Nov 20126 Nov 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8561
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvanced Sensor Systems and Applications V
Country/TerritoryChina
CityBeijing
Period5/11/126/11/12

Keywords

  • FBG
  • Linear-array detector
  • Spectrometer
  • Sub-pixel algorithm
  • Transfer matrix method

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