Qiu Ciyuan, Xu Qianfan
Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA.
Opt Express. 2011 Dec 19;19(27):26905-10. doi: 10.1364/OE.19.026905.
We show a diffraction-based coupling scheme that allows a micro-resonator to directly manipulate a free-space optical beam at normal incidence. We demonstrate a high-Q micro-gear resonator with a 1.57-um radius whose vertical transmission and reflection change 40% over a wavelength range of only 0.3 nm. Without the need to be attached to a waveguide, a dense 2D array of such resonators can be integrated on a chip for spatial light modulation and parallel bio-sensing.
我们展示了一种基于衍射的耦合方案，该方案允许微谐振器在正入射时直接操纵自由空间光束。我们展示了一个半径为1.57微米的高Q值微齿轮谐振器，其垂直透射和反射在仅0.3纳米的波长范围内变化40%。无需连接到波导，这种谐振器的密集二维阵列可以集成在芯片上用于空间光调制和平行生物传感。
