On Mar 11, 2011, at 7:50 AM, Joel Jaeggli wrote: > On 3/11/11 7:16 AM, Jeff Wheeler wrote: >> On Fri, Mar 11, 2011 at 9:25 AM, ML <m...@kenweb.org> wrote: >>> Would it be too crazy to buy a spool of fiber and splice the end of one pair >>> to the next pair and so on? Won't be able to simulate 2200 miles of fiber >>> but it'll be a long span. >> >> This is by no means crazy. If you visit a laboratory where gear is >> tested, you'll find exactly that -- spools of fiber which can be >> connected together (through whatever splicing or patching method is >> desired for the simulation) to give the desired span length. These >> usually look nicer than big spools of cable, and are even available in >> rack-mount enclosures with vendor logos. :) > > one does not however do 2200 miles of terrestrial fiber simulation > without simulating regeneration as well. > > You can, but, it requires electronic retiming of the fiber signal (fiber->ring buffer->configurable delay->fiber).
I guess technically that simulates one iteration of regeneration to some extent, but, it certainly wouldn't represent a test of 2200 miles worth of analog regeneration of a digital signal. Owen
