Nanomechanical Optical Fiber with Embedded Electrodes Actuated by Joule Heating.
Nanomechanical Optical Fiber with Embedded Electrodes Actuated by Joule Heating.
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DOI：
10.3390/ma7085591
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发表时间：
2014-07-31
期刊：
影响因子：
--
通讯作者：
Horak P
中科院分区：
文献类型：
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作者：
Lian Z;Segura M;Podoliak N;Feng X;White N;Horak P
采用多材料共拉技术制备了夹套中嵌入金属电极的纳米机械光纤。在光纤的中心，两个玻璃芯被薄膜悬挂并被空气包围，形成了一个高度依赖于温度的定向耦合器。我们演示了两个光纤芯之间的光开关的焦耳加热的电极与低至0.4 W的电功率，从而演示了电驱动的全光纤微机电系统（MEMS）。模拟结果表明，光纤结构的横向热膨胀是光开关的主要机制。
Nanomechanical optical fibers with metal electrodes embedded in the jacket were fabricated by a multi-material co-draw technique. At the center of the fibers, two glass cores suspended by thin membranes and surrounded by air form a directional coupler that is highly temperature-dependent. We demonstrate optical switching between the two fiber cores by Joule heating of the electrodes with as little as 0.4 W electrical power, thereby demonstrating an electrically actuated all-fiber microelectromechanical system (MEMS). Simulations show that the main mechanism for optical switching is the transverse thermal expansion of the fiber structure.