Here is some help http://www.americanfibertek.com/FAQ.htm#fiber and http://www.americanfibertek.com/products/PDFCatalog/History.pdf All the fiber I saw followed the convention orange=MM, yellow=SM. MM fiber is not capable of handling SM input, but SM fiber can handle MM input. IIRC, the reason was power on the laser emission as well as frequencies used, etc. There is also some info in SONET, 3e, by Goralski --it's on amazon.com. I have the 2e, and I learned a ton from it, including the introductory material about how networking developed as it did.
In our lab, we weren't often blessed with red and blue connectors; more often it was dual black connectors, in which case we ran fingers down the fiber to get the 180-degree twist (rx--tx and tx--rx): it really is a manual crossover. The finger roll only works in a lab, though. Dolphins lose their grip on the transoceanic fibers... Annlee ""Zsombor Papp"" wrote in message news:[EMAIL PROTECTED] > At 01:20 AM 7/18/2003 +0000, Bill wrote: > >Just learning basics of fiber communication. > > Btw, optical communication is indeed an interesting topic. Does anyone have > a recommendation for a good book on this? I would be very interested in a > book (let alone web site) that explains the fundamental principles > (modulation, dispersion, spectral width, etc) in a great detail, but > without making my brain explode with thousands of formulas. (Yeah, I know, > it's not an easy request.) > > For example, why exactly do we need that conditioning cable when connecting > a MM cable to a SM interface? > > Thanks, > > Zsombor > > > I am not sure about which fiber > >cable I saw but it was orange and basically connected two 3550's together. > > > >The fiber had two connectors on each side. One was blue and the other was > >red. > > > >How is it normally connected? I guess the switch ports are receive and > >transmit. So, does that mean if you connect red on the left port on one > >switch, you would connect the red on the other side of the cable to the > >right port of the switch? > > > >Thx > >bill Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72555&t=72544 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
