Short and Robust Polymer Mode (De)multiplexers using Shortcuts to Adiabaticity

Abstract

This thesis is devoted to the theoretical investigation and numerical simulations of mode (de)multiplexers on polymer We begin by introducing the theory of coupled-waveguide system and the quantum?optical analogies between weakly-coupled waveguide structure and two-level system driven by near-resonant laser light We apply shortcuts to adiabaticity to coupled-waveguide system and design two couplers Ω-coupler and Δ-coupler Ω-coupler was designed to optimize the system stability against coupling coefficient variations and Δ-coupler was designed to be robust against the input wavelength variations The simulation results vertify the theoretical predictions and we use the approach to design mode (de)multiplexers that are compact broadband and have large fabrication tolerance

Date of Award	2015 Jul 13
Original language	English
Supervisor	Shuo-Yen Tseng (Supervisor)