期刊
OPTICS EXPRESS
卷 18, 期 3, 页码 2967-2972出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.002967
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资金
- National Natural Science Foundation of China [60578048]
- National Science Foundation [ECCS 0523923]
- CNRS
- Region of Lorraine
We analyze the resonance spectrum in silicon microring resonators taking into account the end-facet reflection from a coupled waveguide, which can provide a dense set of Fabry-Perot resonances. Based on the simple configuration of a microring coupled with a waveguide, the resulting asymmetric Fano-like non-Lorentzian resonance is obtained by scattering theory and experiment. Enhanced sensing performance with steeper slope to the resonance is theoretically predicted and experimentally demonstrated for a 10-mu m racetrack silicon microring resonator. A high sensitivity of similar to 10(-8) RIU in terms of the detection limit is obtained in a 30-dB signal-to-noise ratio (SNR) system. (C) 2010 Optical Society of America
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