Comparison of Different 3-dB 2x2 Coupler Designs on SOI Platform

  • 郭 筱玟

Student thesis: Master's Thesis


This thesis is devoted to theoretical investigation and numerical simulations of 3-dB 2×2 couplers for 220 nm Silicon-on-Insulator (SOI) platform We begin by introducing the operation principle of four different waveguide splitter systems then we use the three-dimensional Finite-Difference Time-Domain (3D-FDTD) method to perform simulations We design four different splitter systems including Directional Couplers (DC) Broadband Directional Couplers (BDC) Multimode Interferometers (MMI) and Adiabatic Couplers (AC) Then we compare the four waveguide splitter systems to evaluate the performance of each coupler design We analyze the imbalance (IM) coupling variation the input/output insertion loss (IL) and footprint of the designs Each design has its own advantages and disadvantages and the design choices are dictated by the requirements
Date of Award2017 Jul 5
Original languageEnglish
SupervisorShuo-Yen Tseng (Supervisor)

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