โ Scribed by Wen-Yeuan Chung
No coin nor oath required. For personal study only.
Deriving the characteristics, order and circularity, of a coupler curve efficiently is presented. The derivation is based on two major concepts. One is the order of a curve is related to the number of the intersection points between this curve and a straight line. The other is the correlation between circularity and intersection with a circle. The coupler curves of some four-bar were used as the basic tool. The developed technique can be applied to figure out the characteristics of a coupler curve and to estimate the maximum number of configurations for linkage with multi-links. Several examples are given for illustration.
๐ SIMILAR VOLUMES
The nonlinear coupling characteristics of the nonparallel coupler due to photorefraction is investigated using coupled mode theory with a step-like refractive index profile. The calculated results show no significant degradation of the performance of the device when less than 3 โข 104Wcm -2 optical i
## Abstract The curved WDM waveguide coupler is presented and analyzed in this paper. Compared with the traditional straight coupler, the curved coupler has the advantage of achieving a wider bandwidth. Waveguide theory and the beam propagation method (BPM) are employed to analyze the operation of