Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings
We report fabrication of THz fiber Bragg gratings (TFBG) using CO_2 laser inscription on
subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a∼
4 GHz-wide stop band and∼ 15 dB transmission loss in the middle of a stop band. The
potential of such gratings in the design of resonant sensors for the monitoring of paper
quality is demonstrated. Experimental spectral sensitivity of the TFBG-based paper thickness
sensor was found to be∼− 0.67 GHz/10 μm. A 3D electromagnetic model of a Bragg grating …
subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a∼
4 GHz-wide stop band and∼ 15 dB transmission loss in the middle of a stop band. The
potential of such gratings in the design of resonant sensors for the monitoring of paper
quality is demonstrated. Experimental spectral sensitivity of the TFBG-based paper thickness
sensor was found to be∼− 0.67 GHz/10 μm. A 3D electromagnetic model of a Bragg grating …
[PDF][PDF] Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings
We report fabrication of THz fiber Bragg gratings (TFBG) using CO2 laser inscription on
subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a~
4 GHz-wide stop band and~ 15 dB transmission loss in the middle of a stop band. The
potential of such gratings in design of resonant sensor for monitoring of paper quality is
demonstrated. Experimental spectral sensitivity of the TFBG-based paper thickness sensor
was found to be~-0.67 GHz/10 µm. A 3D electromagnetic model of a Bragg grating was used …
subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a~
4 GHz-wide stop band and~ 15 dB transmission loss in the middle of a stop band. The
potential of such gratings in design of resonant sensor for monitoring of paper quality is
demonstrated. Experimental spectral sensitivity of the TFBG-based paper thickness sensor
was found to be~-0.67 GHz/10 µm. A 3D electromagnetic model of a Bragg grating was used …
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