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首页> 外文期刊>Optics Letters >All-optical switching of silicon disk resonator based on photothermal effect in metal-insulator-metal absorber
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All-optical switching of silicon disk resonator based on photothermal effect in metal-insulator-metal absorber

机译：金属-绝缘体-金属吸波体中基于光热效应的硅盘谐振器全光开关

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摘要

Efficient narrowband light absorption by a metal-insulator-metal (MIM) structure can lead to high-speed light-to-heat conversion at a micro- or nanoscale. Such a MIM structure can serve as a heater for achieving all-optical light control based on the thermo-optical (TO) effect. Here we experimentally fabricated and characterized a novel all-optical switch based on a silicon microdisk integrated with a MIM light absorber. Direct integration of the absorber on top of the microdisk reduces the thermal capacity of the whole device, leading to high-speed TO switching of the microdisk resonance. The measurement result exhibits a rise time of 2.0 μs and a fall time of 2.6 μs with switching power as low as 0.5 mW; the product of switching power and response time is only about 1.3 mW · μs. Since no auxiliary elements are required for the heater, the switch is structurally compact, and its fabrication is rather easy. The device potentially can be deployed for new kinds of all-optical applications.
机译：金属-绝缘体-金属 （MIM） 结构的高效窄带光吸收可以导致微米或纳米尺度的高速光热转换。这种MIM结构可以作为加热器，实现基于热光（TO）效应的全光光控制。在这里，我们通过实验制造并表征了一种基于集成了MIM光吸收器的硅微盘的新型全光开关。吸收器直接集成在微盘顶部，降低了整个器件的热容量，导致微盘谐振的高速TO切换。测量结果显示，开关功率低至0.5 mW时，上升时间为2.0 μs，下降时间为2.6 μs;开关功率和响应时间的乘积仅为1.3 mW左右 ·μs。由于加热器不需要辅助元件，因此开关结构紧凑，制造相当容易。该器件可能可用于新型全光应用。

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  • 来源
    《Optics Letters》 |2014年第15期|4431-4434|共4页
  • 作者

    Yuechun Shi; Xi Chen; Fei LouYiting ChenMin YanLech WosinskiMin Qiu;

  • 作者单位

    Optics and Photonics, School of Information and Communication Technology, KTH--Royal Institute of Technology, Electrum 229,16440 Kista, Sweden;

    State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, 310027 Hangzhou, China;

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  • 正文语种 英语
  • 中图分类 计量学;
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