Broadband cloaking device: optical possible?

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Getting closer to the Star Trek cloaking tech all the time and this one looks like it doesn't need metamaterials.

Roddenberry would be smiling ear to ear.

http://www.physorg.com/news171876586.html

Broadband invisibility in the microwave range

September 11th, 2009 By Miranda Marquit

(PhysOrg.com) -- In the series Star Trek, Klingons and Romulans have spaceships outfitted with cloaking devices that hide their presence from sight, as well as from the sensors of their rivals' spaceships.
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Now, though, a team at the Helsinki University of Technology in Finland has demonstrated broadband cloaking of cylindrical objects in the microwave regime. “This really is a helpful development,” Sergei Tretyakov tells PhysOrg.com. “Most other invisibility devices are very narrow in the range they affect.”
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The experiment blocking microwave frequencies was done using a waveguide. The cylinder was enclosed with conducting sheets orthogonal to the electric field vector. Tretyakov points out that this setup is ideal for antennas, since it can help weed out interference.
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....our simulation shows that this should be possible to do with visible objects, not just hiding them in the microwave range.”
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Perhaps that advanced broadband cloaking device is a little closer than we thought.