Re: Tunable SFP

[Eric Litvin <eric () lumaoptics net>]

Dwdm tunable 10G can run at 1G with rate select. 

Sent from my iPhone

> On Jun 7, 2015, at 2:15 PM, Tony Wicks <tony () wicks co nz> wrote:
>
> 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.