We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
All-fiber vibration sensor based on nano-wire grid polarizer.
- Authors
Yun Zhao; Feng Zhou; Hao Wu Fei Xu; Yan-qing Lu
- Abstract
We propose a novel all-fiber vibration sensor without any bulk optical element by employing an in-line nano-wire grid (NWG) fiber polarizer. The NWG is directly fabricated on tip of a single mode fiber (SMF) by focused ion beam technology. According to effective medium theory, the sub-wavelength NWG has strong polarization properties. In our experiment, the reflection contrast between transverse electric and transverse magnetic modes reaches 14 dB, which is sensitive enough to monitor polarization change induced by photoelastic effect. We apply a sinusoidal vibration signal generated by a piezoelectric transducer onto the fiber. The output light signal from the SMF coincides well with the vibration source. The frequency response of the sensor is measured from 20 Hz to 4 kHz showing great consistency.
- Subjects
VIBRATIONAL spectra; NANOWIRES; NANOWIRE optical sensors; POLARIZERS (Light); NANOTECHNOLOGY; PIEZOELECTRIC transducers
- Publication
Optical Engineering, 2012, Vol 51, Issue 5, p1
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.OE.51.5.050504