Subterranean silicon photonics: Demonstration of buried waveguide-coupled microresonators
- 18 August 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (8)
- https://doi.org/10.1063/1.2009062
Abstract
Laterally-coupled silicon microresonators are fabricated beneath the surface of a silicon-on-insulator substrate using a modified separation by implantation of an oxygen technique. Implantation of oxygen ions into a substrate with patterned thermal oxide mask was utilized to realize buried waveguiding structures. Microdisk resonators in the buried silicon layer show loaded quality factors of 2000, with extinction ratios in excess of 20dB. The process also results in the formation of a silicon layer on the surface of the wafer that is suitable for the fabrication of electronic devices, thereby paving the way for three-dimensional monolithic integration of electronics and photonics in silicon.Keywords
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