1G/10G options over 130 km of fiber

Fri Mar 5 20:36:43 UTC 2010

A dark fiber path was recently ordered to a remote location on our 
network, and to my surprise, the engineering report on the path is coming 
back at around 130 km, which is substantially longer than I expected the 
span to be.

While I am researching gear that will drive a signal this far without a 
mid-span regen, I'm also inquiring with the carrier to see if there is any 
way to shorten the span, but I also have to be prepared for the chance 
that a shorter span is not possible.

I've seen some pieces from MRV and Transition that might be up to the job, 
though most of the options I've seen are rated to 120 km, tops.

That said, I'd be interested in hearing about what people who are driving 
similar spans.  I don't think I'm going to have the budget to go out and 
buy Ciena/Infinera/Cisco ONS kit just for this, since I don't have any at 
the present time.  The link is still being built, so I haven't gotten an 
engineering report yet.  My gut tells me that the 2-point loss on the 
span at 1550nm will be somewhere around 30-35 dB.

jms