Coupling between single-mode fibers and Si-based optical waveguides

• Main Authors: Tsung-Chan Huang, 黃崇展
• Other Authors: Yang-Tung Huang
• Format: Others
• Language: en_US
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/90194771823714614758

碩士 === 國立交通大學 === 電子研究所 === 81 === Due to the great improvement of switching time on electric device and the increasing chip size, the transmission delaysradually becomes the dominate factor that influence the overall system. Because optics show its excellent characteristic for transmission, optical waveguides are proposed to solve the communication problems at high freqency. Optical fibers areapable of transmit signals through long distance without much distortion, which is a good media to replace wire. Si-basedptical waveguides are compatible with Si IC technology today. Optical signals are sent through fibers and on-chip waveguides to the designed position on chip. In the transmission path, the discontinuities between fibers and waveguides result in serious coupling loss. By means of numerical simulation methods,PFE(Mode Propagation by Fourier Expansion), we can establish the simulation system to analyze the transmission characteristicnd get the optimum structure for our waveguides. We fabricate waveguides by Si3N4 in NCTU Semiconductor Reaserch Center. We measure the loss of the waveguides and theoupling loss between single-mode fiber and waveguide by cutback method and scattering detection method. We compare the simulation results with experiment results to investigate the feasibility of the MPFE method and our optical interconnect structure.