Abstract
A spatial/wavelength-division multiplexing topology with combination of a tunable-wavelength filter and an interferometric wavelength scanner is used to interrogate a range of fiber Bragg grating (FBG) strain sensors embedded in modern composite materials. A nine-element FBG sensor system based on this topology is demonstrated for quasi-static strain sensing of a carbon fiber reinforced plastic plate for aerospace applications. Preliminary experimental results show that a strain resolution of ∼1.8μ∈ rms with an ∼30-Hz bandwidth (∼0.32μ∈/√Hz) for quasi-static strain measurement has been achieved. © 1996 Optical Society of America.
| Original language | English |
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| Pages (from-to) | 683-685 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 21 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 May 1996 |