LX sfp minimum range
gary.buhrmaster at gmail.com
Thu Jan 26 16:48:05 CST 2012
On Thu, Jan 26, 2012 at 13:47, David Storandt <dstorandt at teljet.com> wrote:
> You can put a 3dB or 5dB optical pad on the link if the receiver can't
> handle zero-distance optical power.
As I recall, the problem may not only be the power
(which can cause receiver saturation), but issue that
fibre paths shorter than (around) 2-10m do not properly
condition the light(*), which can result in some issues
at the receiver.
(*) My memory says modal distribution issues.
While 'single mode' fibre only supports one
mode of transmission, it takes a short distance
for the fibre to really be single mode. You can
use a mode filter to address the problem, or just
use fibres that are at least a few meters.
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