Abstract
We propose and experimentally demonstrate a dual-band optical filter based on a single microdisk resonator. An analytical model is built based on the transfer matrix method and is applied to simulate the properties of such a device. Competition and interference of the dual modes in the resonator lead to dual-band filtering with high isolation. As the finite-difference time-domain simulation illustrates, two low-order resonant modes can be effectively triggered by optimizing the waveguide width and spacing gap between the compact resonator and waveguides. In experiment, a double side-coupled microdisk resonator was fabricated on a nanophotonic silicon- on-insulator platform, and dual-band bandpass filtering is realized with an optical isolation higher than and an insertion loss lower than . The experimental results agree well with our modeling results.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Qingzhong Huang, Juguang Chen, Ge Song, Kun Jie, Zhenzheng Wang, Yi Wang, Jinsong Xia, and Jinzhong Yu
Opt. Lett. 39(23) 6553-6556 (2014)
Qingzhong Huang, Zhan Shu, Ge Song, Juguang Chen, Jinsong Xia, and Jinzhong Yu
Opt. Express 22(3) 3219-3227 (2014)
Lev Deych, Michel Ostrowski, and Yasha Yi
Opt. Lett. 36(16) 3154-3156 (2011)