科研之友
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摘要
We propose a novel ring resonator configuration in a channelless photonic crystal. The proposed ring resonator utilizes the self-collimation effect and the bending and splitting mechanisms of line defects to route the propagation of light, instead of conventional indexed-guided waveguides or photonic crystal band gap waveguides. The finite-difference time-domain method (FDTD) is used to investigate the characteristics of the ring resonator. The new design exhibits an ON-OFF contrast with an extinction ratio of more than 12 dB, and has an ultra-compact footprint of 3.3 x 3.3 mu m(2) when it operates at the optical communication wavelength lambda = 1.55 mu m. The design presented may find applications in the areas including ultra-compact switch and wavelength filer in integrated optical circuits.
- 出版日期2008-12
- 单位中国矿业大学（北京）
