en Optical transmission enhancement through a nanoslit with a single nanoantenna cavity تخصصی Special پژوهشي Research - We have numerically showed that the extraordinary optical transmission of light through a vertical nanoslit in a metal film can be enhanced by replacing the slit with an array of slits. A nanoantenna cavity is formed by a nearby metallic nano-strip over the nano-slits. Using finite difference time domain (FDTD) method, we have studied the transmission properties of the proposed structure. It is shown that in a well chosen geometric condition the optimized cavity antenna can enhance greatly the transmission of light through a lateral nano-slit (about 5.3 times). The transmission spectrum of the structure can be tuned by adjusting the size or the distance between the lateral nano-slits as well. Such structure has promising applications in designing optical nano-scale devices. - We have numerically showed that the extraordinary optical transmission of light through a vertical nanoslit in a metal film can be enhanced by replacing the slit with an array of slits. A nanoantenna cavity is formed by a nearby metallic nano-strip over the nano-slits. Using finite difference time domain (FDTD) method, we have studied the transmission properties of the proposed structure. It is shown that in a well chosen geometric condition the optimized cavity antenna can enhance greatly the transmission of light through a lateral nano-slit (about 5.3 times). The transmission spectrum of the structure can be tuned by adjusting the size or the distance between the lateral nano-slits as well. Such structure has promising applications in designing optical nano-scale devices. plasmonic waves, integrated optics, waveguide. plasmonic waves, integrated optics, waveguide. 881 884 http://opsi.ir/browse.php?a_code=A-10-1-334&slc_lang=en&sid=1 Marzieh Asadnia Fard Jahromi Marzieh Asadnia Fard Jahromi kh_asadnia@yahoo.com 10031947532846001637 10031947532846001637 Yes University of Kashan University of Kashan Hamid Reza Zangeneh Hamid Reza Zangeneh hrzangeneh@kashanu.ac.ir 10031947532846001638 10031947532846001638 No University of Kashan University of Kashan