Signal processing techniques for interferometric fiber-optic strain sensors
Abstract
Fiber optic strain sensors for smart structures will have to provide broad dynamic range, high resolution, wide bandwidth, and in certain applications, absolute strain measurement. Different sensor configurations and applications require different signal processing methods. A number of signal processing techniques and optical configurations for interferometric fiber-optic strain sensors are discussed. Their applications to smart structure and material studies are presented. Advantages and disadvantages of each signal processing technique are discussed from the perspective of practicality, multiplexing, and absolute measurement capability.
- Publication:
-
Journal of Intelligent Material Systems and Structures
- Pub Date:
- July 1992
- Bibcode:
- 1992JIMSS...3..432L
- Keywords:
-
- Fiber Optics;
- Interferometry;
- Optical Data Processing;
- Signal Processing;
- Smart Structures;
- Strain Measurement;
- Homodyne Reception;
- Optical Heterodyning;
- Poisson Ratio;
- Quadrature Phase Shift Keying;
- Instrumentation and Photography