fa Coupling Coefficient of Nano Plasmonic Directional Coupler Based on Evanescence Field تخصصی Special پژوهشي Research <p dir="ltr" style="text-align: justify;">In this paper we obtain the coupling coefficient of plasmonic directional coupler (PDC) made up of two monolayer waveguides separated in the range of 200 nm for TM mode and we assume each waveguides acts as a perturbation to other waveguide but does not affect the waveguide mode. &nbsp;We numerically calculated the Transfer distance respect to normalized frequency and simulated in two directions, <img alt="AWT IMAGE" height="12" src="file:///C:/Users/nasib/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif" width="15" >&nbsp;and z, values are about millimetres and smaller in a limitation of a bandwidth. Thus it is suitable for designing of integrated optical circuits and construction of couplers and switches.</p> <p dir="ltr" style="text-align: justify;">In this paper we obtain the coupling coefficient of plasmonic directional coupler (PDC) made up of two monolayer waveguides separated in the range of 200 nm for TM mode and we assume each waveguides acts as a perturbation to other waveguide but does not affect the waveguide mode. &nbsp;We numerically calculated the Transfer distance respect to normalized frequency and simulated in two directions, <img alt="AWT IMAGE" height="12" src="file:///C:/Users/nasib/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif" width="15" >&nbsp;and z, values are about millimetres and smaller in a limitation of a bandwidth. Thus it is suitable for designing of integrated optical circuits and construction of couplers and switches.</p> plasmonic, coupling coefficient, transfer distance, integrated optical circuits plasmonic, coupling coefficient, transfer distance, integrated optical circuits 1053 1056 http://opsi.ir/browse.php?a_code=A-10-1-1189&slc_lang=fa&sid=1 Leila Motamed-Jahromi Leila Motamed-Jahromi leilamotamed@yahoo.com 10031947532846005046 10031947532846005046 Yes Shiraz university of technology Shiraz university of technology Mohsen Hatami Mohsen Hatami hatami@sutech.ac.ir 10031947532846005047 10031947532846005047 No Shiraz university of technology Shiraz university of technology