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Authors: Y. Xing, T. Ako, J. George, D. Korn, H. Yu, P. Verheyen, M. Pantouvaki, G. Lepage, P. Absil, C. Koos, J. Leuthold, J. Beeckman, W. Bogaerts
Title: Direct Digital Control of an Efficient Silicon+Liquid Crystal Phase Shifter
Format: International Conference Proceedings
Publication date: 8/2014
Journal/Conference/Book: 11th International Conference on Group IV Photonics (GFP)
Volume(Issue): p.43-44
Location: Paris, France
DOI: 10.1109/group4.2014.6962029
Citations: 2 ( - last update: 14/7/2024)
2 (OpenCitations - last update: 27/6/2024)
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We demonstrate a phase shifter based on a silicon
slot waveguide infiltrated with liquid crystal. We achieve a phase shift of 73pi for a 5V drive voltage, with a voltage-length product of around 1V. We can drive the phase shifter directly with a 1V, duobinary pulse-width-modulated signal, allowing direct digital CMOS control of an analog optical phase shifter.

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