%%
%% Ein Beispiel der DANTE-Edition
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%% 7. Auflage
%%
%% Beispiel 32-03-32 auf Seite 741.
%%
%% Copyright (C) 2016 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{145.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-optexp}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](0,-0.3)(3,3.3)
\pnode(1,2.5){A}\pnode(2.5,1){B}
\psset{optboxsize=1 0.6}
\optbox[position=start](A)(B|A)
\optbox[position=end](B|A)(B)
\drawfiber[fiberstyle=angle, linearc=0.5]{1}{2}
\end{pspicture}
\end{document}