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Proceedings Paper

Circular grating resonators as candidates for ultra-small photonic devices
Author(s): Sophie Schönenberger; Nikolaj Moll; Thilo Stöferle; Thorsten Wahlbrink; Jens Bolten; Stephan Götzinger; Thomas Mollenhauer; Christian Moormann; Rainer F. Mahrt; Bert J. Offrein
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Paper Abstract

We investigate circular grating resonators (CGR) with a very small footprint. Photonic devices based on circular grating resonators are computationally designed, optimized and studied in their functionality using finite difference time-domain (FDTD) method. A wide variety of critical quantities such as transmission and reflection, resonant modes, resonant frequencies, and field patterns are calculated. Due to their computational size some of these calculations have to be performed on a supercomputer (e.g. parallel Blue Gene machine). The devices are fabricated in SOI using the computational design parameters. First they are defined by electron-beam lithography. Then the pattern transfer is achieved by an inductively coupled reactive-ion etch process. Finally, the devices are characterized by coupling light from a tunable laser with a tapered lensed fiber. As predicted from the simulations the measured transmission spectra exhibit a wide range of different type of resonances with quality factors exceeding 1000.

Paper Details

Date Published: 1 May 2008
PDF: 6 pages
Proc. SPIE 6996, Silicon Photonics and Photonic Integrated Circuits, 69960A (1 May 2008); doi: 10.1117/12.780176
Show Author Affiliations
Sophie Schönenberger, IBM Zürich Research Lab. (Switzerland)
Nikolaj Moll, IBM Zürich Research Lab. (Switzerland)
Thilo Stöferle, IBM Zürich Research Lab. (Switzerland)
Thorsten Wahlbrink, AMO GmbH (Germany)
Jens Bolten, AMO GmbH (Germany)
Stephan Götzinger, ETH Zürich (Switzerland)
Thomas Mollenhauer, AMO GmbH (Germany)
Christian Moormann, AMO GmbH (Germany)
Rainer F. Mahrt, IBM Zürich Research Lab. (Switzerland)
Bert J. Offrein, IBM Zürich Research Lab. (Switzerland)

Published in SPIE Proceedings Vol. 6996:
Silicon Photonics and Photonic Integrated Circuits
Giancarlo C. Righini; Seppo K. Honkanen; Lorenzo Pavesi; Laurent Vivien, Editor(s)

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