Paper
2 February 2009 Measuring FBG's Bragg wavelength using fiber Fabry-Perot tunable filter
Rizhong Li, Junbin Huang, Bo Tang, Hongcan Gu
Author Affiliations +
Abstract
A method using fiber Fabry-Perot tunable filter to achieve FBG sensor's Bragg wavelength is described. The system has the capability to interrogate large number of DFB sensors, whilst obtaining absolute Bragg wavelength with pm resolution. A demonstration system with 4 strain sensors is presented, which obtains DFB sensor's absolute strain value and achieves sub-microstrain resolution at 300Hz interrogating rate.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rizhong Li, Junbin Huang, Bo Tang, and Hongcan Gu "Measuring FBG's Bragg wavelength using fiber Fabry-Perot tunable filter", Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71570X (2 February 2009); https://doi.org/10.1117/12.806764
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KEYWORDS
Fiber Bragg gratings

Sensors

Fabry–Perot interferometers

Tunable filters

Digital signal processing

Optical filters

Interferometry

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