We demonstrate that phase shifts larger than 2 pi can be induced by all-optical tuning in silicon waveguides of a few micrometers in length. By generating high concentrations of free carriers in the silicon employing absorption of ultrashort, ultraviolet laser pulses, the refractive index of silicon can be drastically reduced. As a result, the resonance wavelength of optical resonators can be freely tuned over the full free spectral range. This allows for active integrated optic devices that can be switched with GHz frequencies into any desired state by all-optical means. (C) 2015 Optical Society of America
机构:
Photonics Research Group, Department of Information Technology, Ghent University-IMEC
Center for Nano- and Biophotonics (NB-photonics), Ghent UniversityPhotonics Research Group, Department of Information Technology, Ghent University-IMEC
Ang Li
Qiangsheng Huang
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机构:
Photonics Research Group, Department of Information Technology, Ghent University-IMEC
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research,Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang UniversityPhotonics Research Group, Department of Information Technology, Ghent University-IMEC
机构:
Photonics Research Group, Department of Information Technology, Ghent University-IMEC
Center for Nano- and Biophotonics (NB-photonics), Ghent UniversityPhotonics Research Group, Department of Information Technology, Ghent University-IMEC
Ang Li
Qiangsheng Huang
论文数: 0引用数: 0
h-index: 0
机构:
Photonics Research Group, Department of Information Technology, Ghent University-IMEC
State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research,Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang UniversityPhotonics Research Group, Department of Information Technology, Ghent University-IMEC