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Optoelectronics Letters

, Volume 1, Issue 1, pp 5–9 | Cite as

Principles and realizations of FBG wavelength tuning with elastic beams

  • Zhang Wei-gang 
  • Wu Zhi-gang 
  • Liu Yan-ge 
  • Yang Yi-fei 
  • Kai Gui-yun 
  • Zhao Qi-da 
  • Yuan Shu-zhong 
  • Dong Xiao-yi 
  • Li En-bang 
  • Xi Jiang-tao 
  • Joe Chicharo
Devices

Abstract

The general principles and realizations of FBG wavelength tuning with elastic beams are proposed and demonstrated. Theories and experiments show that when displacement at the center point of simple beams, deflection of cantilever beams and torsion strain of torsion beams are relatively small, Bragg wavelength shifts of sensing FBGs have linear relationship with applied external stress, lateral displacement, torque and torsional angles, respectively. The experimental results indicate that the curvature sensitivity of the simple beam is 1.65 nm/m−1, the displacement sensitivity of the equivalent-strain cantilever beam is 4.4 cm/kg and the torque and torsional angle sensitivities of the torsion beam are 6.27 nm/Nm and 0.0867 nm/degree, respectively.

CLC number

TN253 

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Copyright information

© Tianjin University of Technology 2005

Authors and Affiliations

  • Zhang Wei-gang 
    • 1
  • Wu Zhi-gang 
    • 1
  • Liu Yan-ge 
  • Yang Yi-fei 
    • 1
  • Kai Gui-yun 
    • 1
  • Zhao Qi-da 
    • 1
  • Yuan Shu-zhong 
    • 1
  • Dong Xiao-yi 
    • 1
  • Li En-bang 
    • 2
  • Xi Jiang-tao 
    • 2
  • Joe Chicharo
    • 2
  1. 1.Institute of Modern OpticsNankai UniversityTianjinChina
  2. 2.School of Electrical, Computer and Telecommunication Engineering, Faculty of InformaticsUniversity of WollongongAustralia

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