Title :
A Photonic Crystal Fiber and Fiber Bragg Grating-Based Hybrid Fiber-Optic Sensor System
Author :
Rajan, Ginu ; Ramakrishnan, Manjusha ; Semenova, Yuliya ; Milenko, Karolina ; Lesiak, Piotr ; Domanski, Andrzej W. ; Wolinski, Tomasz R. ; Farrell, Gerald
Author_Institution :
Photonics Res. Centre, Dublin Inst. of Technol., Dublin, Ireland
Abstract :
A hybrid sensor that operates in the intensity domain by converting the polarization and wavelength information from the photonic crystal fiber sensor and fiber Bragg grating (FBG) sensor, respectively, into intensity variation is presented in this paper. The hybrid fiber-optic sensor system involves a combination of a polarimetric sensor based on a photonic crystal fiber and a FBG sensor and is used for simultaneous strain and temperature measurement. The strain sensitivity of the polarization maintaining photonic crystal fiber at different lengths and the corresponding slope required for the edge filter which converts the FBG wavelength information into intensity are studied and presented in this paper. The proposed sensor configuration has a wide range of applications in smart fiber-optic sensing.
Keywords :
Bragg gratings; fibre optic sensors; holey fibres; light polarisation; photonic crystals; polarimeters; spectral methods of temperature measurement; strain measurement; edge filter; fiber Bragg grating; hybrid fiber optic sensor system; intensity domain; intensity variation; photonic crystal fiber; polarimetric sensor; polarization information; smart fiber optic sensing; strain measurement; temperature measurement; wavelength information; Bragg gratings; Optical fiber polarization; Optical fiber sensors; Sensitivity; Strain; Temperature measurement; Temperature sensors; Fiber Bragg grating (FBG); hybrid sensor; polarimetric sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2114650
