12-27-2005 07:23 AM - edited 03-03-2019 11:18 AM
How do I determine the Modal Bandwidth of fiber? Is it something mentioned on the fiber itself?
Thanks.
12-27-2005 07:40 AM
hi
AFAIK it depends upon the slot where u hookup the fiber (either SFP or GBIC )which can tell u the B/W limit/range it can support upto.
regds
12-27-2005 04:38 PM
The question is a bit fuzzy (to me anyhow), but if it is listed as "9 (or 8.3)/
If it has "50/125" or "62.5/125" printed on the jacket, it's multi-mode fiber.
There are other sizes (especially for MM), but 50/125 and 62.5/125 are the most common, with 50/125 becoming more popular with the rollout of GigE over multi-mode.
Single mode also tends to be in a Canary Yellow jacketing, while multi-mode is frequently orange, but also comes in grey, black, and possibly other colors.
Single mode can carry more bandwidth farther without amplification. As a single bandwidth carrier, it commonly goes up to ~10Gig (OC192, 10Gig Ethernet) but could carry more.
As a carrier of a Wave Division Multiplexed (WDM, including Dense WDM - DWDM) signal, Single Mode can carry much more .... up to 64 channels, each channel carrying 2.4Gig to 10Gig (specs vary with the manufacturer of the WDM / DWDM).
Good Luck
Scott
12-28-2005 05:34 AM
Check the data specs of the fiber, or see if it's written on the fiber itself.. Look for a value like 160 Mhz*km (which is the standard value for multimode fiber).
I don't have a fiber in front of me, but IIRC it should be written on the fiber...
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