期刊
OPTICS EXPRESS
卷 19, 期 24, 页码 23658-23663出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.023658
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资金
- Japanese Ministry
- SCOPE
- Grants-in-Aid for Scientific Research [21226009] Funding Source: KAKEN
Submicron-wide silicon waveguide coupler with gap variable mechanism is proposed for a compact optical waveguide switch. Two freestanding silicon waveguides are placed parallel with a submicron gap. The gap is changed by electrostatic comb-drive micro-actuators to control the coupling coefficient of the coupler. The fabricated device consisted of the silicon waveguides of 400 nm in width and 260 nm in thickness. The total size of the switch was 100 mu m wide and 150 mu m long. Decreasing the gap between the waveguides to 110 nm, the output intensity at drop port became a maximum while the output intensity at through port became a minimum. The extension ratio of the switch output was 17 dB for the waveguide displacement of 300 nm. (C) 2011 Optical Society of America
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