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
- 1G/10G options over 130 km of fiber Justin M. Streiner
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