Race on to Build Fiber Optic Networks - Alvarion  TEL AVIV (Reuters) - Broadband services using fiber optic  networks are expected to grow in the coming years with the race  now on among companies to develop this technology, the chairman  of Israel's Alvarion Ltd. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=ALVR.O qtype=sym infotype=info qcat=news"&gt;ALVR.O&lt;/A&gt; said on Tuesday.