Research Paper 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 was presented in a research paper (published in February 2012). 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.
Source: Sensors 2012, 12, 1898-1918; doi:10.3390/s120201898; Communications Research Centre Canada, 3701 Carling Avenue, P.O. Box 11490, Station H, Ottawa, ON K2H 8S2, Canada; E-Mail: firstname.lastname@example.org; Tel.: +1-613-998-2721; Fax: +1-613-993-7139
Received: 16 January 2012; in revised form: 3 February 2012 / Accepted: 8 February 2012 / Published: 10 February 2012