Title :
Coupling efficiency of the tapered coupler
Author_Institution :
University of Washington, Department of Electrical Engineering, Seattle, USA
Abstract :
Analytic solutions, in terms of parabolic cylinder functions, are presented for the mode amplitudes and power in a directional coupler having a constant coupling coefficient and propagation constants that vary linearly. The solutions lead to a remarkably simple expression for the coupling efficiency.
Keywords :
directional couplers; integrated optics; optical waveguides; coupling efficiency; directional coupler; parabolic cylinder functions;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19750156
