From: Ouellette, Tim (tim.ouellette@xxxxxxx)
Date: Tue Jun 25 2002 - 03:36:40 GMT-3
Single-mode and multi-mode define the means by which light traverses a fiber
optic cable
The difference between single and multi-mode fiber is the transmission
method, capability and distance associated for ea. fiber type. Single mode
fiber requires a laser and is for long distance up to 50 miles versus
multi-mode fiber which uses an LED for transmission and is for short
distance ports/devices connections up to 1650 ft. (500 mtrs.)
Single mode uses one light source hence modal dispersion is reduced and you
get higher performance over greater distances. Multimode allows light in
from different angles/sources. Because they enter the fibre at different
angles the arrive at the other end at different times, which is known as
modal dispersion, hence this limits the distance used for MMF and the
bandwidth available when it is used.
http://www.datacottage.com/nch/fibre.htm
http://www.arcelect.com/fibercable.htm
-----Original Message-----
From: Tom Young [mailto:gitsyoung@yahoo.co.jp]
Sent: Tuesday, June 25, 2002 1:57 AM
To: ccielab@groupstudy.com
Subject: the fiber 's model
The fiber cable has two models, single-model and
multi-model, I want to know how about the different
between them, for example, speed, ultility, principle, and
the distance they could be used.
Thanks
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