Polymer/Silica Hybrid Three-Dimension Integrated Multiplexer Based on MDM and WDM

Abstract

In this paper, a polymer/silica hybrid three-dimension integrated multiplexer based on mode division multiplexing (MDM) and wavelength division multiplexing (WDM) is proposed. WDM is implemented on different layers by two multimode interference (MMI) couplers, and MDM is achieved by a three-dimension integrated asymmetric directional coupler (ADC). The directional coupling between the fundamental mode in the silica waveguide and the first-order mode in the polymer waveguide is realized by three-dimension integration of the upper polymer waveguide and the lower silica waveguide, and the WDM of 1310nm and 1550nm wavelength channels is realized by using structurally compact MMI coupler. The integration density of the chip is improved by multi-material hybrid integration and three-dimension integration, and the transmission capacity of the chip is increased by the multifunction integration of MDM and WDM.