Archive > Volume 13 Issue 5 > 2017,13(5):354-357. DOI:https://doi.org/10.1007/s11801-017-7075-9 CSTR:[cstr] Prev Next
Periodical rocking long period gratings in PANDA fibers for high temperature and refractive index sensing
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
We report periodical rocking long period gratings (PR-LPGs) in PANDA fibers fabricated with CO2 laser. The PR-LPGs achieve very high coupling efficiency of 19 dB with 12 periods and a 3.5° twist angle in just one scanning cycle, which is much more effective than the conventional CO2 laser fabrication technique. This type of LPGs exhibits polarization-selective resonance dips which demonstrate different sensitivities to environmental parameters. The high temperature and external refractive index sensitivities are measured simultaneously, so it can be used as a wavelength-selective polarization filter and sensor. Keywords:
Project Supported:
Clc Number:
