Integrated visible-light liquid-crystal-based phase modulators
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 08, 2022
- Source ID
- 10.1364/oe.454494
Entities
People
- Christopher Baiocco
- Jelena Notaroš
- Manan Raval
- Michael. R. Watts
- Milica Notaros
- Thomas Dyer
Organizations
- Defense Advanced Research Projects Agency
- Massachusetts Institute of Technology
- National Science Foundation
- State University of New York