Ultrafast All-Optical Switching in a Silicon-Nanocrystal-Based Silicon Slot Waveguide at Telecom Wavelengths
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- 作者：Alejandro Martnez ; Javier Blasco ; Pablo Sanchis ; Jos V. Galn ; Jaime Garca-Ruprez ; Emmanuel Jordana ; Pauline Gautier ; Youcef Lebour ; Sergi Hernndez ; Romain Guider ; Nicola Daldosso ; Blas Garrido ; Jean M
- 刊名：Nano Letters
- 出版年：2010
- 出版时间：April 14, 2010
- 年：2010
- 卷：10
- 期：4
- 页码：1506-1511
- 全文大小：379K
- 年卷期：v.10,no.4(April 14, 2010)
- ISSN：1530-6992
文摘
We demonstrate experimentally all-optical switching on a silicon chip at telecom wavelengths. The switching device comprises a compact ring resonator formed by horizontal silicon slot waveguides filled with highly nonlinear silicon nanocrystals in silica. When pumping at power levels about 100 mW using 10 ps pulses, more than 50% modulation depth is observed at the switch output. The switch performs about 1 order of magnitude faster than previous approaches on silicon and is fully fabricated using complementary metal oxide semiconductor technologies.