\documentclass{article}
\usepackage[paperheight=10cm,paperwidth=10cm,scale=0.97]{geometry}
\pagestyle{empty}
\usepackage{brunnian}

\usetikzlibrary{arrows}

\setlength{\parindent}{0pt}

\begin{document}
\begin{figure}
\begin{tikzpicture}
\draw[knot,double=ring1] (0,0) arc(180:0:3);
\draw[knot,double=ring2] (6,0) circle (3);
\draw[knot,double=ring1] (0,0) arc(-180:0:3);
\end{tikzpicture}
%\caption{Hopf link}
\end{figure}
\end{document}