RE: Tunable SFP

["Tony Wicks" <tony () wicks co nz>]

I don't quite see why you would want to use a tuneable 1G optic now days. Generally people use coloured optics to 
either increase the capacity they can push down a Dark Fibre or to interconnect with a DWDM OTN. In days past using 
different wavelengths for traffic separation would be not unheard of but in today's world there are many better ways of 
doing that. The use of tuneable optics reduces sparing and complexity but it is a very difficult and expensive 
manufacturing task and I can understand why no manufacturer would bother with 1G as that seems like a very small 
market. If you really want 1G there are plenty of CWDM fixed optics available. If you need more capacity, well really 
10G is not at all expensive now days. If you want traffic separation then use MPLS. If you have old 1G only switches, 
well, you know the answer to that.

My 2c


-----Original Message-----
Hi,

I believe nobody actually answered the original question: is there any tunable SFP module available. Notice the lack of 
a + in that statement. The datasheets for modules cited in this thread are all 10G modules with minimum speed of 8.5G. 
Nothing that will work at 1G.