Submicrosecond submilliwatt silicon-on-insulator thermooptic switch

被引:126
作者
Geis, MW [1 ]
Spector, SJ [1 ]
Williamson, RC [1 ]
Lyszczarz, TM [1 ]
机构
[1] MIT, Lincoln Lab, Lexington, MA 02420 USA
关键词
high-index contrast; integrated optics; Mach-Zelmder interferometer; optical; silicon photonics; thermal switch;
D O I
10.1109/LPT.2004.835194
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Mach-Zehnder interferometer thermooptic switches were made using a thin-silicon-on-insulator material system. The switches use single-mode strip-Si waveguides, 0.26 x 0.4 mum, operating at 1.5 mum. The waveguides were heated directly by passing current through them, resulting in switching power of 6 mW and a rise time of 0.6 mus. By heating both arms of the interferometer differentially, so one arm is cooling while the other heating, the switching-signal input power is reduced to < 100 muW. In this differential mode, the switching time can be decreased to 50 ns by pulsing the electrical input to 10 mW. Modeling indicates 10-ns-switching time would require similar to23 mW of pulsed power.
引用
收藏
页码:2514 / 2516
页数:3
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