Liquid-crystal-based visible-light integrated optical phased arrays and application to underwater communications
Abstract
In this Letter, we present the first, to the best of our knowledge, liquid-crystal-based integrated optical phased arrays (OPAs) that enable visible-light beam forming and steering. A cascaded OPA architecture is developed and experimentally shown to emit a beam in the far field at a 632.8-nm wavelength with a power full width at half maximum of 0.4°×1.6° and 7.2° beam-steering range within ±3.4 V. Furthermore, we show the first visible-light integrated-OPA-based free-space-optical-communications transmitter and use it to demonstrate the first integrated-OPA-based underwater-wireless-optical-communications link. We experimentally demonstrate a 1-Gbps on–off-keying link through water and an electronically-switchable point-to-multipoint link with channel selectivity greater than 19 dB through a water-filled tank.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 04, 2023
- Source ID
- 10.1364/ol.494387
Entities
People
- Daniel M. Desantis
- Jelena Notaroš
- Manan Raval
- Milica Notaros
Organizations
- Defense Advanced Research Projects Agency
- Massachusetts Institute of Technology
- National Science Foundation