I have a customer that just purchased a second building.Distance = unknown (guess about 1 -2 miles)
They are having an electrical company run the span on the telephone poles. (They are working out al of the permissions)

Question. I know Single-mode would work hands down. But I am trying to determine if multi-mode would be a better option.
Is there any sort of "speed graph" that states for this "spec" of cable (OS3 for instance) with this wavelength running full duplex at 1 mile will have this expected bandwidth.

They seem to be in that grey (slate ) area where almost anything will work for them, the question is what will work best for the cost?

Or should I just concetrate on the media converter and spec the cabel to that? I know that can limit future growth.
Another option might be to use multiple pairs and split the traffic....would be more endpoints. Would like to achieve 10Gbs as an end result.

At that distance single-mode is really your only option.

From "Wiki":
Typical multimode links have data rates of 10 Mbit/s to 10 Gbit/s over link lengths of up to 600 meters.

So assuming the correct transmitter/recever, I can get 10 gig at 600 meters, what can I expect at 1200meters or 2 miles.

I can't find a calculator anywhere. Now it is becoming more of a "personal challenge" to find this out. I have determined that single mode will be the fail safe and that is what I plan on pushing. Thanks for reinforcing that.

Now admittedly my data is a little old (as am I), but we never figured on 62/125 mm fiber delivering 10 gb at more then 100 meters. 50/125 MM fiber would do 10 gb at 300 meters - no more.

Single mode will do 10 gb at 10 KM.

Sam

600 meters is roughly 1800 feet, about 1/3 a mile.

MM is designed for short lengths, like 300 meters.

Just a question, what kind of fiber is Verizon FIOS.

I am being told that the FIOS network is entirely CO powered (lit) and that no powered repeaters are needed. Only power required is at the terminal at the customer location.

I find this hard to beleve as FIOS to 1 of my locations would be a 6 mile hop

Reason I ask is POTS in my area comes out of a CSV and requires AC power to operate, they do have a backup battery in the CSV but during the huricane we lost our POTS because the battery died. If FIOS is CO powered (except for the customer terminal) it would now be more reliable than POTS.

Remember when your telebhone was the only thing that worked after a big storm, it's no longer that way.

I've put in fiber runs that ran 100 kms (60 miles).

Needless to say, they were all Single Mode. I can assume then that FIOS is SM.


Sam

FIOS uses PON ( passive optical network) technology and runs over s.m. fiber. The only real concern a customer would have is keeping the ONT at their location powered up. Around here a CEV may contain FIOS network equipment, but it's only the splitters ( no power needed) and the fiber cross-connect field.

Forgive me for not having a solid source on this, but I either read or remember someone telling me that MM fiber shouldnt go over 2000ft.

I look at it this way. Single mode would not be wrong... Multi mode COULD be right or wrong? I would go with the safe bet for sure...

Well after all of that, I find out that the new building that they are getting "down the street" is only 200 yards away. :bang:

I would go with MM then.

If you go with MM, request OM3 50/125 Laser Optimized Fiber.

I have documentation from Leviton that says MM fiber (OM1,2,3) will go 2000 meters with at least 100 Mb/s bandwidth. I don't know how far you can go and still get 1 gig...