期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 28, 期 21, 页码 2459-2462出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2600645
关键词
Terahertz photonics; Bragg reflectors; Fabry-Perot filters; mechanically tunable components
资金
- Italian Ministry of Foreign Affairs, Directorate General for the Country Promotion
- Italian Ministry of Education, University and Research (Progetto Premiale THEIA)
Periodical elements made by stacking thin layers of the cyclo-olefin polymer Zeonor, separated by spacers made of bi-adhesive tape, are used as building blocks for realizing tunable terahertz (THz) filters. The basic block is a Bragg reflector whose bandgap can be controlled by changing the geometrical features of the periodical elements. By combining two of these Bragg building blocks, separated by a void defect cavity, a tunable bandpass filter is obtained. The thickness of the defect cavity is mechanically tuned by means of a translation stage. The resulting filter are mechanically stable and they show both high transmittance and narrow linewidths, owing to the selected THz low-loss polymer.
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