Compact and low power thermo-optic switch using folded silicon waveguides
Compact and low power thermo-optic switch using folded silicon waveguides
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DOI：
10.1364/oe.17.010457
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发表时间：
2009-06-22
期刊：
影响因子：
3.8
通讯作者：
Cheben, Pavel
中科院分区：
文献类型：
--
作者：
Densmore, Adam;Janz, Siegfried;Cheben, Pavel
通过利用高折射率对比度硅光子丝波导可以实现的小弯曲半径，我们展示了一种新的低功耗热光开关，其排列在密集的双螺旋几何结构中。这样的设计允许波导长度延长，以增加相移，而不需要增加加热体积。这为降低热光开关的功耗提供了一种有效的方法，同时也为开关阵列的开发提供了一种紧凑的几何结构。螺旋路径Mach-Zehnder干涉仪的开关功率为6.5 mW，上升时间为10 -90%，为14 μ s。与采用传统直波导几何结构的Mach-Zehnder干涉仪相比，开关功率降低了5倍以上。(C) 2009年美国光学学会
By exploiting the small bend radius achievable using high-index-contrast silicon photonic wire waveguides, we demonstrate a new low power thermo-optic switch arranged in a dense, double spiral geometry. Such a design permits the waveguide length to be extended for increased phase shift, without the need for increased heated volume. This provides an effective means to reduce the power consumption of thermo-optic switches, as well as a compact geometry desirable for the development of switch arrays. A low switching power of 6.5 mW was obtained for a spiral-path Mach-Zehnder interferometer device having a 10%-90% rise time of 14 mu s. The switching power is shown to be reduced by more than 5 times compared to a Mach-Zehnder interferometer employing a conventional straight waveguide geometry. (C) 2009 Optical Society of America