DESIGN OF A NEW TYPE OF ELECTRO-OPTIC POLYMER WAVEGUIDE MODULATOR WITH ULTRAHIGH BANDWIDTH
- 41 Downloads
In this article, rectangle, trapezoidal and T type microstrip lines embedded into up cladding of the waveguide are designed. By the analysis of the finite element method (FEM), this embedded microstrip line has perfect velocity matching between the electric signal and lightwave carrier and at the same time, conductor loss of the trapezoidal and T type microstrip lines also reduce. Thus the modulator’s bandwidth increases greatly. Calculations show that, comparing with one of non-embedded rectangle microstrip line which is the most familiar configuration of polymer modulator, the optical 3-dB bandwidths of embedded trapezoidal and T type microstrip increase 264% and 339% respectively under the condition of impedance matching.
Key wordsOptoelectronics Electro-Optic Modulators Modulation Bandwidth Polymer Waveguide Microstrip Line
Unable to display preview. Download preview PDF.
- 8.Keren Li and Kazuhiko Atsuki, “Low conductor loss microstrip lines with side-grooves”, IEEE MTT-S Digest, June 1996, vol. 1, 311–314Google Scholar
- 9.Zorica Pantić and Raj Mittra, “Quasi-TEM analysis of Microwave Transmission Lines by the Finite-Element Method”, IEEE, MTT-34 (1986), 1096–1103Google Scholar
- 10.H. A. wheeler, “Formulas for the skin effect”, Proc. IRE, 30 (1942), 412–424Google Scholar