Fabrication of Tunable Optical Polarization Splitter

• Main Authors: Chang, Chung Hwa, 張昌華
• Other Authors: Wang,Way-Seen
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/63755296067094383132

碩士 === 國立臺灣大學 === 光電(科學)研究所 === 82 === Asymmetrically coupled waveguide structures, using two different kinds of material and having a zero waveguide gap, with sections of alternating phase component are proposed as switched directional coupler configurations in which complete conversion of TE/TM polarization from one waveguide to two output waveguides respectively can be achieved by an electrical adjustment. We implement the above device structure by the TI- MILO and the NI- MILO waveguides, discuss their experimental results and propose the NI-MILO waveguide structure as tunable optical polarization splitter. Moreover, an efficient numerical method associated with the normal-mode theory and the beam propagation method which is better than only using the beam propagation method is presented. Using these tools, we can analyze many different kinds of coupled structures efficiently and exactly.