Experimental observation of cavity formation in composite metamaterials
Optical Society of American (OSA)
11132 - 11140
Item Usage Stats
In this paper, we investigated one of the promising applications of left-handed metamaterials: composite metamaterial based cavities. Four different cavity structures operating in the microwave regime were constructed, and we observed cavity modes on the transmission spectrum with different quality factors. The effective permittivity and permeability of the CMM structure and cavity structure were calculated by use of a retrieval procedure. Subsequently, in taking full advantage of the effective medium theory, we modeled CMM based cavities as one dimensional Fabry-Perot resonators with a subwavelength cavity at the center. We calculated the transmission from the Fabry-Perot resonator model using the one-dimensional transfer matrix method, which is in good agreement with the measured result. Finally, we investigated the Fabry-Perot resonance phase condition for a CMM based cavity, in which the condition was satisfied at the cavity frequency. Therefore, our results show that it is possible to treat metamaterial based cavities as one-dimensional Fabry-Perot resonators with a subwavelength cavity. © 2008 Optical Society of America.
KeywordsCoordinate measuring machines
Transfer matrix method
Cavity mode (CM)
Composite metamaterial (CMM)
Effective medium theory (EMT)
Fabry-Perot (FP) resonators
Left-handed metamaterials (LHM)
Meas ured results
Optical society of America (OSA)
Quality factor (Q factor)
Transfer matrix (TM)
Published Version (Please cite this version)http://dx.doi.org/10.1364/OE.16.011132
Showing items related by title, author, creator and subject.
Caglayan, H.; Özbay, Ekmel (S P I E - International Society for Optical Engineering, 2010-07-29)We investigated the cavity structure by the deformation of a unit cell of a Composite Metamaterial (CMM) structure. We considered different cavity structures with different resonance frequencies and Q-factors. We observed ...
Çağlayan, Hümeyra; Bulu, I.; Loncar, M.; Özbay, Ekmel (OSA, 2008-10)We report subwavelength localization of electromagnetic fields within cavities based on metamaterials. Cavity resonances are observed in the transmission spectrum of a split ring resonator and composite metamaterials cavity ...
Şenlik, S. Seçkin; Kocabaş, Aşkın; Aydınlı, Atilla (Optical Society of American (OSA), 2009-08)We report on a comparative study of grating based plasmonic band gap cavities. Numerically, we calculate the quality factors of the cavities based on three types of grating surfaces; uniform, biharmonic and Moiré surfaces. ...