Silicon-based monolithically integrated whispering-gallery mode resonators with buried waveguides

M. Ghulinyan; F. Ramiro Manzano; R. Guider; N. Prtljaga; G. Pucker; L. Pavesi

doi:10.1117/12.922226

11 May 2012 Silicon-based monolithically integrated whispering-gallery mode resonators with buried waveguides

M. Ghulinyan; F. Ramiro Manzano; R. Guider; N. Prtljaga; G. Pucker; L. Pavesi

Author Affiliations +

Proceedings Volume 8431, Silicon Photonics and Photonic Integrated Circuits III; 84311O (2012) https://doi.org/10.1117/12.922226
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We report on the realization and characterization of a silicon-based integrated optical platform which implements a vertical coupling scheme between a Whispering-gallery type microresonator and a buried dielectric waveguide. The vertical coupling allows for the separation of the resonator and the waveguide into different planes, which enables one to realize the optical components in different materials/thicknesses. The high optical quality of this cavity micro-optical system follows from the accurate planarization of the waveguide topography, which is achieved by multiple depositions-and- reflows of a borophosphosilicate glass over strip waveguides. Importantly, we demonstrate the feasibility of our approach for wafer-scale mass fabrication of freestanding planar resonators suspended in air and coupled to integrated bus waveguides. This opens the door for the realization of stable all-integrated resonator systems for optomechanical and metrological applications and has the potential to substitute today's complicated fiber-taper coupling schemes.

Citation Download Citation

M. Ghulinyan, F. Ramiro Manzano, R. Guider, N. Prtljaga, G. Pucker, L. Pavesi, "Silicon-based monolithically integrated whispering-gallery mode resonators with buried waveguides", Proc. SPIE 8431, Silicon Photonics and Photonic Integrated Circuits III, 84311O (11 May 2012); doi: 10.1117/12.922226; https://doi.org/10.1117/12.922226

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