Abstract
We propose a novel fiber micro-displacement sensor based on an embedded fiber dual cladding modes interferometer. This type of interferometer has a very high extinction ratio (ER) of 27.7 dB, with only one very deep resonance dip within C and L bands, enabling it to be used as an intensity-modulated sensor. With it embedded in a cured carbon fiber composites based beam, it shows a high sensitivity response to micro-displacement in ER variation. Experimental results show that there is a quasi-linear relationship between the micro-displacement and its ER variation, with the measurement resolution of 4.67 μm, and the dynamic measurement range of 0∼200 Hz.
| Original language | English |
|---|---|
| Pages (from-to) | 334-337 |
| Number of pages | 4 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 236 |
| DOIs | |
| Publication status | Published - 1 Dec 2015 |
| Externally published | Yes |
Keywords
- Fiber dual cladding modes interferometer
- Fiber interferometer
- Key words Fiber sensor
- Micro-displacement sensor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering