SFP+ ER and ZR

[bas <kilobit () gmail com>]

Hi Guys,

I thought ER and ZR SFP+ optics were not available (yet) due to power
and cooling "challenges".

However on this site: http://www.excelight.com/products/datalink/sfpplus.asp
They offer both ER and ZR SFP+ optics.

Has anyone used or tested with these? If so with which equipment?
Or have you found other vendors of these optics?

Thanks in advance,

Bas