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首页> 外文会议>Conference on Silicon-Based and Hybrid Optoelectronics Ⅳ Jan 23-24, 2002, San Jose, USA >Electrically Tunable Silicon-Based Mirrors
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Electrically Tunable Silicon-Based Mirrors

机译：电子可调硅镜

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摘要

For optical applications using a silicon platform (e.g. optical interconnects), passive and especially active components made of silicon need to be developed. Unfortunately, the optical properties of silicon are not sensitive to electric fields, which makes active elements difficult to fabricate. In this work, we demonstrate electrically tunable mirrors that consist of a porous silicon microcavity resonator. Liquid crystal molecules are uniformly infiltrated into the porous silicon matrix to allow tuning of the microcavity resonance with an electric field. The applied electric field causes the liquid crystal molecules to change orientation, creating a change in the value of their refractive index and a shift of the resonance wavelength of the microcavity resonator. Simulations show devices could be built that exhibit a resonance with a full width at half maximum value of 2nm. The resonance can be shifted to achieve a change in reflectivity from ～0% to ～100%. Thus, the application of a small ac voltage should lead to a complete modulation of the reflected light.
机译：对于使用硅平台的光学应用（例如，光学互连），需要开发由硅制成的无源组件，尤其是有源组件。不幸的是，硅的光学性质对电场不敏感，这使得有源元件难以制造。在这项工作中，我们演示了由多孔硅微腔谐振器组成的电可调镜。液晶分子均匀地渗透到多孔硅基质中，以允许通过电场调节微腔共振。施加的电场使液晶分子改变取向，从而改变其折射率的值并改变微腔谐振器的谐振波长。仿真表明，可以制造出在2nm的一半最大值处显示具有全宽度谐振的器件。可以改变共振，以使反射率从〜0％变为〜100％。因此，施加小的交流电压将导致反射光的完全调制。

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