Authors:	S. Werquin, Y. De Koninck, P. Bienstman
Title:	Ring resonators wioth vertically coupling grating for densely mulitplexed applications
Format:	International Journal
Publication date:	1/2015
Journal/Conference/Book:	IEEE Photonics Technology Letters
Volume(Issue):	27(1) p.97-100
DOI:	10.1109/LPT.2014.2362844
Citations:	7 (Dimensions.ai - last update: 14/4/2024) 6 (OpenCitations - last update: 19/4/2024) Look up on Google Scholar
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Abstract

Silicon-on-insulator photonic microring resonators are ideal components for applications that require a high degree of multiplexing because of their small size. However, when very high numbers of microrings are used in parallel, grating couplers and waveguide routing quickly takes up more chip space than the actual rings. Therefore, we suggest to combine microring resonators with local weak gratings to read out light directly from the microring while still maintaining high quality factors of 19000. We demonstrate simulation results and an experimental analysis of different grating parameters. The resonance spectrum is recovered from the vertical emission of the microring grating, without using a traditional output waveguide.