聚合物非对称脊波导结构参数与有效折射率

Structural Parameters and Effective Index of Polymer Asymmetric Ridge Waveguide

以有机聚合物非对称脊波导为研究对象,采用有效折射率法,系统地分析了不同脊宽、芯层高度和芯层平板短边宽度条件下,非对称脊形波导有效折射率与脊高的变化规律,并与对称脊波导进行比较。研究表明:两种脊波导结构具有相同的特性,即在芯层高度一定时,有效折射率随脊高、脊宽的增加而增加;在脊宽一定时,有效折射率随芯层高度的增加而增加。而非对称脊波导在其他条件一定时,有效折射率随短边芯层宽度的减小而减小。该结果对有机聚合物非对称脊波导的应用具有一定的参考价值。

The relationship of effective index and ridge height under different ridge width, core height and the short side width of the core plate were systematically studied in effective index method with organic polymer asymmetric ridge waveguide as the object. The result shows that both the structures of ridge waveguide had the same characteristics. They were the effective index increased with increasing of ridge height, ridge width when core height was constant and with increasing of core height when the ridge height, ridge width were constant. For the asymmetrical ridge waveguide, the effective index decreased with reduction of the short side width of the core plate when other conditions were constant. The result is valuable for reference in terms of application of the organic polymer asymmetric ridge waveguide