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Ultra-compact Si-SiO2 microring resonator optical channel dropping filters

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9 Author(s)
B. E. Little ; Res. Lab. of Electron., MIT, Cambridge, MA, USA ; J. S. Foresi ; G. Steinmeyer ; E. R. Thoen
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Compact optical channel dropping filters incorporating side-coupled ring resonators as small as 3 μm in radius are realized in silicon technology. Quality factors up to 250, and a free-spectral range (FSR) as large as 24 nm are measured. Such structures can be used as fundamental building blocks in more sophisticated optical signal processing devices.

Published in:

IEEE Photonics Technology Letters  (Volume:10 ,  Issue: 4 )