You're the first person to suggest that kind of configuration, so thanks. We ended up purchasing an 8-wave DWDM from our transport vendor, as it solved the problem and gives us a path to future growth. Frank -----Original Message----- From: Jérôme Nicolle [mailto:jerome@ceriz.fr] Sent: Monday, April 29, 2013 12:29 AM To: nanog@nanog.org Subject: Re: 80 km BiDi XFPs Le 03/04/2013 01:15, Frank Bulk a écrit :
BiDi XFPs
Why not using a duplex 120km and a circulator[1] ? This could be far more reliable if you avoid PC connectors on the way. You may also mux several DWDM waves using this and a low-loss mux (found <1.5dB for 8 channels). Of course, for such lenghts, you may need a chromatic dispersion compensator. [1] http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=373 -- Jérôme Nicolle 06 19 31 27 14