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Sensing characteristics of a Sagnac interferometer based on ethanol-filled photonic crystal fiber with two ultra-large holes for temperature measurement.
- Source :
-
Optik - International Journal for Light & Electron Optics . Jan2020, Vol. 200, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- We propose a Sagnac interferometer (SI) based on ethanol-filled photonic crystal fiber (PCF) with two ultra-large holes for temperature measurement. The phase birefringence of the fully-filled PCF varies significantly with the temperature which is realized by infiltrating ethanol into air-holes. Two ultra-large holes in y direction near the core result in a high birefringence of PCF. By selecting a fiber length of 2.5 cm, the average sensitivity of temperature can be up to -34 nm/°C with a resolution of 0.00029 °C in the wavelength range of 780 nm–2170 nm within temperature variation of 40 °C. The proposed PCF with the simple structure is easy to prepare in the experiment. Furthermore, due to the ultrahigh-sensitivity, the proposed sensor provides a new implementation for accurately temperature measurement. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TEMPERATURE measurements
*PHOTONIC crystal fibers
*INTERFEROMETERS
*BIREFRINGENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00304026
- Volume :
- 200
- Database :
- Academic Search Index
- Journal :
- Optik - International Journal for Light & Electron Optics
- Publication Type :
- Academic Journal
- Accession number :
- 139723435
- Full Text :
- https://doi.org/10.1016/j.ijleo.2019.163061