Temperature independent bend measurement using a pi-phase shifted FBG at twice the Bragg wavelength

Harpreet K. Bal; Fotios Sidiroglou; Zourab Brodzeli; Scott A. Wade; Greg W. Baxter; Stephen F. Collins

doi:10.1117/12.866398

8 September 2010 Temperature independent bend measurement using a pi-phase shifted FBG at twice the Bragg wavelength

Harpreet K. Bal, Fotios Sidiroglou, Zourab Brodzeli, Scott A. Wade, Greg W. Baxter, Stephen F. Collins

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76530H (2010) https://doi.org/10.1117/12.866398
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

The effect of bending on the twin peaks of an alternative type of pi-phase shifted fibre Bragg grating (FBG) (embedded in a resin) at twice the Bragg wavelength, has been investigated. Variation of the direction of bending resulted in corresponding changes in the relative intensity of these peaks. Temperature independent bend measurements were realised by monitoring the change of ratio of the reflected intensities of these peaks.

Citation Download Citation

Harpreet K. Bal, Fotios Sidiroglou, Zourab Brodzeli, Scott A. Wade, Greg W. Baxter, and Stephen F. Collins "Temperature independent bend measurement using a pi-phase shifted FBG at twice the Bragg wavelength", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76530H (8 September 2010); https://doi.org/10.1117/12.866398

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