Novel materials such as indium tin oxide (ITO) and graphene demonstrate unique optoelectronic properties for compact devices such as optical modulators, switches, and phase shifters. We are working to integrate such materials in the silicon photonics platform to enable the next generation of integrated nanophotonic devices, and also utilize these technologies to build scalable arrays of ultra-compact phase shifters for electrically tunable 2D phased array antennas for free space applications that include communications and lidar.
Selected Relevant Publications:
- “Broadband Electroabsorption Modulators Design Based on Epsilon-Near-Zero Indium Tin Oxide,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 21, no. 4, 2015.
- “Silicon Nanophotonic Waveguide Modulator with Graphene Active Medium,” Photonics in Switching Conference, paper JM3B.4, 2014.
- “Silicon photonic modulators based on epsilon-near-zero indium tin oxide materials,” IEEE Photonics Conference (IPC), 2014.
Collaborators: Ultrafast Nanostructure Optics Lab at BU, Schuller Lab