We demonstrate fiber Bragg gratings written in polymer fiber for use in the THz window for the first time. A KrF excimer laser operating at 248 nm was used to inscribe notch-type gratings in single component Topas subwavelength fiber. A transmission loss at the centre wavelength of the grating of 60 dB is observed in short gratings containing only 192 notches. Experimental results and modeling are presented. The gratings are expected to find use in THz signal filtering and chemical or biosensing applications.

© 2012 OSA

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Appl. Opt.

• M. Yamada and K. Sakuda, “Analysis of almost-periodic distributed feedback slab waveguides via a fundamental matrix approach,” Appl. Opt.26(16), 3474–3478 (1987). [CrossRef] [PubMed]

Electron. Lett.

• B. J. Eggleton, P. A. Krug, L. Poladian, and F. Ouellette, “Long periodic superstructure Bragg gratings in optical fibers,” Electron. Lett.30(19), 1620–1622 (1994). [CrossRef]
• I. Bennion, D. C. J. Reid, C. J. Rowe, and W. J. Stewart, “High reflectivity monomode fibre grating filters,” Electron. Lett.22(6), 341–343 (1986). [CrossRef]
• F. C. Jastrow, K. Munter, R. Piesiewicz, T. Kurner, M. Koch, and T. Kleine-Ostmann, “300 GHz transmission system,” Electron. Lett.44(3), 213–214 (2008). [CrossRef]

Nature

• H. T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, “Active terahertz metamaterial devices,” Nature444(7119), 597–600 (2006). [CrossRef] [PubMed]

Opt. Express

• M. Gerhard, C. Imhof, and R. Zengerle, “Low-loss compact high-Q 3D THz grating resonator based on a hybrid silicon metallic slit waveguide,” Opt. Express18(11), 11707–11712 (2010). [CrossRef] [PubMed]
• K. Nielsen, H. K. Rasmussen, A. J. Adam, P. C. Planken, O. Bang, and P. U. Jepsen, “Bendable, low-loss Topas fibers for the terahertz frequency range,” Opt. Express17(10), 8592–8601 (2009). [CrossRef] [PubMed]
• H. Zhong, A. Redo-Sanchez, and X. C. Zhang, “Identification and classification of chemicals using terahertz reflective spectroscopic focal-plane imaging system,” Opt. Express14(20), 9130–9141 (2006). [CrossRef] [PubMed]

Opt. Lett.

• S. Z. A. Lo and T. E. Murphy, “Nanoporous silicon multilayers for terahertz filtering,” Opt. Lett.34(19), 2921–2923 (2009). [CrossRef] [PubMed]
• L. J. Chen, H. W. Chen, T. F. Kao, J. Y. Lu, and C. K. Sun, “Low-loss subwavelength plastic fiber for terahertz waveguiding,” Opt. Lett.31(3), 308–310 (2006). [CrossRef] [PubMed]

Semicond. Sci. Technol.

• J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications - explosives, weapons and drugs,” Semicond. Sci. Technol.20(7), S266– S280 (2005). [CrossRef]

Other

• M. G. Kuzyk, Polymer Fiber Optics: Materials, Physics, and Applications (CRC Press, Boca Raton, FL, USA, 2006).

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