Abstract
Coupled microcircular resonators tangentially coupled to a bus waveguide, which is between the resonators, are numerically investigated by the finite-difference time-domain technique. For symmetrically coupled microcircular resonators with refractive index of 3.2, radius of , and width of the bus waveguide of 0.4 μm, a mode Q factor of the order of is obtained for a mode at the frequency of . An output coupling efficiency of as high as 0.99 is calculated for a mode with a Q factor ranging from to . The mode Q factor is 2 orders larger than that of the modes confined in a single circular resonator tangentially coupled to the same bus waveguide. Furthermore, the high Q traveling modes in the coupled microcircular resonators are suitable for optical single processing.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Ling-Xiu Zou, Xiao-Meng Lv, Yong-Zhen Huang, Heng Long, Qi-Feng Yao, Jin-Long Xiao, and Yun Du
Opt. Lett. 38(19) 3807-3810 (2013)
Qingzhong Huang, Zhan Shu, Ge Song, Juguang Chen, Jinsong Xia, and Jinzhong Yu
Opt. Express 22(3) 3219-3227 (2014)
Qi-Feng Yao, Yong-Zhen Huang, Jian-Dong Lin, Xiao-Meng Lv, Ling-Xiu Zou, Heng Long, Yue-De Yang, and Jin-Long Xiao
Opt. Express 21(2) 2165-2170 (2013)