Title :
Design of Resonant Optical Nano-Antenna for 1.55µm Wavelength
Author :
Zhan, Lingli ; Shi, Jianping ; Wen, Songlin ; Dong, Kexiu
Author_Institution :
Dept. of Phys. & Electron. Technol., Anhui Normal Univ., Wuhu, China
Abstract :
This paper is on the exploration of near infrared band optical nano-antenna design with the adoption of finite difference time domain method. The design result of 1.55μm optical antenna and its performance are presented. The optimal parameters are: the antenna arm L=330nm, the feedback gap D=20nm, the antenna arm thickness H=20nm, the antenna arm width W=60nm. This antenna can realize enhancement of field intensity about 2000 times for 1.55μm which indicates excellent near field enhancement effects. When wave with incidence angle less than 40°, feedback gap field intensity can be kept to be above 70% of the peak value, the antenna has well directional characteristics.
Keywords :
antenna radiation patterns; finite difference time-domain analysis; nanophotonics; optical design techniques; optical elements; optical feedback; antenna arm thickness; directional properties; feedback gap field intensity; finite difference time domain method; incidence angle; near field enhancement effects; near infrared band optical nanoantenna; resonant optical nanoantenna; size 20 nm; wavelength 1.55 mum; Adaptive optics; Antenna feeds; Optical feedback; Optical imaging; Optical reflection; Optical scattering;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2011 Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6555-2
DOI :
10.1109/SOPO.2011.5780578
