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Monday, December 12, 2016
Abstract-Mechanically tunable Bragg filters for terahertz applications
Antonio Ferraro, Dimitrios C. Zografopoulos, Roberto Caputo
http://ieeexplore.ieee.org/document/7758662/?reload=true
Mechanically tunable Bragg filters at terahertz frequencies are designed, fabricated by a simple procedure, and characterized via THz time-domain spectroscopy. The Bragg reflectors are composed by stacking thin cyclo-olefin Zeonor polymer layers, which are separated by spacers made of a bi-adhesive tape. The defect cavity is void and its thickness is mechanically tuned by means of a translation stage. The filters show high transmittance and quality factors, owing to the selected very low-loss polymer.
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