Nanophotonic modal dichroism: mode-multiplexed modulators
Abstract
As the diffraction limit is approached, device miniaturization to integrate more functionality per area becomes more and more challenging. Here we propose a novel strategy to increase the functionality-per-area by exploiting the modal properties of a waveguide system. With such approach the design of a mode-multiplexed nanophotonic modulator relying on the mode-selective absorption of a patterned Indium-Tin-Oxide is proposed. Full-wave simulations of a device operating at the telecom wavelength of 1550nm show that two modes can be independently modulated, while maintaining performances in line with conventional single-mode ITO modulators reported in the recent literature. The proposed design principles can pave the way to a novel class of mode-multiplexed compact photonic devices able to effectively multiply the functionality-per-area in integrated photonic systems.
Cite
@article{arxiv.1705.07954,
title = {Nanophotonic modal dichroism: mode-multiplexed modulators},
author = {Susobhan Das and Shima Fardad and Inki Kim and Junsuk Rho and Rongqing Hui and Alessandro Salandrino},
journal= {arXiv preprint arXiv:1705.07954},
year = {2017}
}