Release Time:2022-07-04  Hits:

Date of Publication: 2009-01-01

Journal: 光电子 激光

Volume: 20

Issue: 8

Page Number: 1008-1011

ISSN: 1005-0086

Abstract: An accurate de-multiplexing mathematical model is established for
   optical fiber Fabry-Perot (F-P)  cavity and Fiber Bragg Grating (FBG)
   multiplexed sensor. The spectral characteristic of the sensor is
   analyzed  and a new mechanism to separate FBG spectrum from F-P cavity
   spectrum is proposed, with a swept laser based  wave length
   interrogator,the experimental results demonstrate that the cross
   interfer-ence between F-P sensor  spectrum and FBG sensor spectrum is
   clearly eliminated,and the resolution of the sensor system is
   effectively  improved with the new demodulation mechanism. The maximum
   uncer-tainty of 0. 2nm and 0. 7pm has been achieved  for the F-P cavity
   length and FBG peak wavelength meas-urement respectively.

Note: 新增回溯数据