Abstract
We report a technique for temperature-insensitive strain measurement by broad-band interferometry. Changes in group delay and dispersion in a Mach-Zehnder interferometer are measured by dispersive Fourier transform spectroscopy (DFTS). These measurements give values for strain and temperature via a well-conditioned matrix transformation, so that strain measurements are independent of temperature change. The technique can be used for remote interrogation of sensors by tandem interferometry.
| Original language | English |
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| Pages (from-to) | 3/1-3/6 |
| Journal | IEE Colloquium (Digest) |
| Issue number | 87 |
| Publication status | Published - 1995 |
| Event | IEE Electronics Division Colloquium on Optical Techniques for Structural Monitoring - London, UK Duration: 28 Apr 1995 → 28 Apr 1995 |