Bandwidth analysis in the curved WDM waveguide coupler

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 the couplers. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 451–455, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20003