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Integrated visible-light liquid-crystal-based phase modulators

Author(s)
Notaros, Milica; Dyer, Thomas; Raval, Manan; Baiocco, Christopher; Notaros, Jelena; Watts, Michael R; ... Show more Show less
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Abstract
In this work, an integrated liquid-crystal-based phase modulator operating at visible wavelengths was developed and experimentally demonstrated. A visible-light silicon-nitride-based 300-mm-wafer foundry platform and a liquid-crystal integration process were developed to leverage the birefringence of liquid crystal to actively tune the effective index of a section of silicon-nitride waveguide and induce a phase shift over its length. The device was experimentally shown to achieve a 41π phase shift within 4.8 Vpp for a 500-µm-long modulator, which means that a 2π phase shifter would need to be only 24.4 µm long. This device is a compact and low-power solution to the challenge of integrated phase modulation in silicon nitride and paves the way for future low-power small-form-factor integrated systems at visible wavelengths.
Date issued
2022-04-11
URI
https://hdl.handle.net/1721.1/143776
Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Journal
Optics Express
Publisher
Optica Publishing Group
Citation
Notaros, Milica, Dyer, Thomas, Raval, Manan, Baiocco, Christopher, Notaros, Jelena et al. 2022. "Integrated visible-light liquid-crystal-based phase modulators." Optics Express, 30 (8).
Version: Final published version

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