کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547468 | 997635 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Demonstration of an integrated optical switch in a silicon photonic crystal directional coupler Demonstration of an integrated optical switch in a silicon photonic crystal directional coupler](/preview/png/1547468.png)
We demonstrate a silicon photonic crystal (PhC) directional coupler optical switch. By engineering the supermodes of the coupled system to provide a slow-light region, the switch has a total length of just 4.9 μm. Thermo-optic switching with a 20 μs response time via an integrated nickel microheater is shown. The proposed switch uses a silica overlayer and infilling of the etched silicon PhC, rather than the more usual membrane slab geometry. The silica infilling and overlayer provides a vertically symmetric structure and is a more robust solution compared to the membrane geometry. We also show that there is no apparent increase in optical loss due to the silica overlayer, despite operating above the lightline; the insertion loss for the air-bridge and silica-embedded structures are comparable (at 1–2 dB).
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 6, May 2009, Pages 1111–1114