Browsing by Subject "Transmission peaks"
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Item Open Access Compact left-handed metamaterial based on double-layer planar metal strip arrays(Optical Society of America, 2006) Guven, K.; Çalışkan, Deniz; Özbay, EkmelThe existence of a left-handed transmission peak of a metamaterial consisting of double-layer planar metal strip arrays at 15 GHz is demonstrated. This design is very suitable to submicron scales required at communication wavelengths. © 2006 Optical Society of America.Item Open Access Photonic bandgap infrared spectrometer(Optical Society of America, 2010) Kondakci, H.E.; Yaman, M.; Dana, A.; Bayındır, MehmetWe propose and demonstrate an infrared (IR) absorption spectrometer, made with a spatially variable photonic bandgap (PBG) structure, a blackbody source, and a simple IR detector, to identify the IR molecular fingerprints of analyte molecules. The PBG-based structure consists of thermally evaporated, IR transparent, high-refractive-index chalcogenide quarter-wave stacks (QWS) with a cavity layer. Spatial variation of the very sharp transmission peak due to the QWS cavity mode allows the structure to be used as a variable IR filter. Our proposed IR-PBG spectrometer can be used for detection and identification of volatile organic compounds.