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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2200–2202

Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings

Guofeng Yan, Andrey Markov, Yasser Chinifooroshan, Saurabh M. Tripathi, Wojtek J. Bock, and Maksim Skorobogatiy  »View Author Affiliations


Optics Letters, Vol. 38, Issue 13, pp. 2200-2202 (2013)
http://dx.doi.org/10.1364/OL.38.002200


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Abstract

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 4GHz-wide stop band and 15dB 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 0.67GHz/10μm. A 3D electromagnetic model of a Bragg grating was used to explain experimental findings.

© 2013 Optical Society of America

OCIS Codes
(250.5460) Optoelectronics : Polymer waveguides
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 16, 2013
Revised Manuscript: May 19, 2013
Manuscript Accepted: May 19, 2013
Published: June 19, 2013

Citation
Guofeng Yan, Andrey Markov, Yasser Chinifooroshan, Saurabh M. Tripathi, Wojtek J. Bock, and Maksim Skorobogatiy, "Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings," Opt. Lett. 38, 2200-2202 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-13-2200


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