Looking for Multimode Fiber to Singlemode Fiber converter???

[Mark Pohlman]

We are in the process of running singlemode fiber to one of our
off-campus buildings to use for a fddi network connection. The fiber length
between this building and the main campus is approximately 10,000 feet, hence
the need to use singlemode. We would like to use the cisco multimode dual
attach fddi interfaces on this singlemode fiber. We have one source for a
device which takes the multimode signal and converts it out onto singlemode.
Are there any other vendors making this device? Is there anyone out there
doing this currently with singlemode fiber? Does it work well?

You can post to this newsgroup or reply to me directly.

many thanx,

--
Mark Pohlman
Academic Computing & Networking
ma...@wugate.wustl.edu
314-935-7391

[Jathin Ullal]

I assume you have ruled out the possibility of replacing your multimode
interfaces/ appliques with single mode ones. If so:

A better scheme, guaranteed to work well would be to use Cisco fddi
concentrators on either side with WS-C1512 Single-mode FDDI A/B port cards
to span the extended distance (works upto 18.6 miles/ 30 kms/ 24 dBm power
budget). The multimode DAS interfaces of your local fddi equipment could then
plug into multimode M ports of these concentrators.

However, if you insist on using Multimode to Single-mode converters, here
are contacts/ addresses of some suppliers. I'm sure there are others.

1) Nokia Cables; Kaapelitie 6; FIN- 90630 OULU; Finland
Sales: Sirpa Huttu +358 81 550 2011 Tech specs: Esko Kiunen/ Seppo Marttila

2) Fibermux Corp.; 21415 Plummer Street; Chatsworth; CA 91311; USA
Sales: 818 709 6000; Sealeta Bates; Fax: 818 725 2680

3) Optical Data Systems Inc. ; 1101 E. Arapaho Road; Richardson, TX 75081, USA
(214) 234 6400. Also Mike Bassell in Sales: 510 831 4780

Most models have worked with Cisco routers and some haven't. Some models that
worked are no longer in production and have been replaced with newer versions.

-Jathin Ullal