Design and Analysis of Filters for Two-Dimensional Cubic Photonic Crystals

• Main Authors: Ding-Wen Su, 蘇鼎文
• Other Authors: Yih-Bin Lin
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/44952682398761719526

碩士 === 龍華科技大學 === 電機工程系碩士班 === 100 === The researcher has attempted to add several dielectric rods in the line-defect waveguide to form filters for two-dimensional cubic photonic crystals. Through adjusting the radius of the dielectric rods, the researcher found the transmission spectra of the filters are tunable. According to the results, the researcher has successfully developed the low-pass, high-pass, and band-pass filters. Furthermore, the researcher added four dielectric rods in the line-defect waveguide to form a resonant-type filter. By this design, the center frequency of the filtered wave could be adjusted by setting the distance between the dielectric rods. Besides, the full width at half maximum (FWHM) of the filtered wave could be controlled by adjusting the radius of the dielectric rods as well. In conclusion, the proposed filters have the features of simplification and convenience for two-dimensional cubic photonic crystals. They are easy to adjust the characteristics of the filters. Therefore, the research will benefit the application of the filters for cubic photonic crystals in the near future.