High-Q silica zipper cavity for optical radiation pressure driven MOMS switch
High-Q silica zipper cavity for optical radiation pressure driven MOMS switch
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DOI：
10.1063/1.4892074
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发表时间：
2014-05
期刊：
影响因子：
1.6
通讯作者：
T. Tetsumoto;T. Tanabe
中科院分区：
文献类型：
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作者：
T. Tetsumoto;T. Tanabe
我们设计了一个具有高光学和机械Q值的二氧化硅拉链腔，并数值模拟了辐射压力驱动的微光机械系统（MOMS）方向开关的可行性。当腔差距为34 nm时，石英拉链腔的光学Q值为4.0 × 104，有效模体积Vmode为0.67λ3。机械Q（Qm）由热弹性阻尼确定，室温下真空中为2.0 × 106。光机械耦合率gOM高达100 GHz/nm，这使得我们能够移动定向腔波导系统，并通过控制辐射压力来切换1550 nm光与770 nm光。
We design a silica zipper cavity that has high optical and mechanical Q (quality factor) values and demonstrate numerically the feasibility of a radiation pressure driven micro opto-mechanical system (MOMS) directional switch. The silica zipper cavity has an optical Q of 4.0 × 104 and an effective mode volume Vmode of 0.67λ3 when the gap between two cavities is 34 nm. The mechanical Q (Qm) is determined by thermo-elastic damping and is 2.0 × 106 in a vacuum at room temperature. The opto-mechanical coupling rate gOM is as high as 100 GHz/nm, which allows us to move the directional cavity-waveguide system and switch 1550-nm light with 770-nm light by controlling the radiation pressure.