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Authors: Y. Xing, T. Ako, J. George, D. Korn, H. Yu, P. Verheyen, M. Pantouvaki, G. Lepage, P. Absil, A. Ruocco, C. Koos, J. Leuthold, K. Neyts, J. Beeckman, W. Bogaerts
Title: Digitally Controlled Phase Shifter using an SOI Slot Waveguide with Liquid Crystal Infiltration
Format: International Journal
Publication date: 2/2015
Journal/Conference/Book: Photonics Technology Letters
DOI: 10.1109/LPT.2015.2416438
Citations: 25 (Web of Knowledge / Dimensions.ai - last update: 27/9/2020)
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Abstract

We demonstrate a phase shifter using a silicon slot waveguide infiltrated with liquid crystal. For a 1mm long device we achieve 73pi phase shift with a 5V voltage, with a voltagelength product of 0.022Vmm around 1V. We drive the phase shifter with a digital 1V, duobinary pulse-width-modulated signal, or a 1V frequency-modulated signal. This enables direct digital CMOS control of an analog optical phase shifter.

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