<s>
The	O
6500	O
Packet-Optical	O
Platform	O
(	O
formerly	O
called	O
the	O
Optical	O
Multiservice	O
Edge	O
6500	O
or	O
OME	O
6500	O
during	O
the	O
product	O
's	O
time	O
at	O
Nortel	O
)	O
in	O
telecommunication	O
,	O
computer	B-Architecture
networking	I-Architecture
and	O
optical	O
communications	O
is	O
a	O
Multi-port	O
multi-protocol	O
system	O
designed	O
by	O
Ciena	O
that	O
supports	O
TDM/WDM/GigE/10G/40G	O
and	O
100G	B-Protocol
ports	O
.	O
</s>
<s>
Typically	O
,	O
increasing	O
the	O
speeds	O
from	O
10G	O
to	O
40G	B-Protocol
to	O
100G	B-Protocol
entails	O
trade-offs	O
such	O
as	O
shortening	O
the	O
distance	O
of	O
each	O
network	O
segment	O
or	O
increasing	O
optical	O
dispersion	O
because	O
of	O
the	O
weakening	O
of	O
optical	O
signals	O
as	O
they	O
travel	O
.	O
</s>
<s>
Nortel	O
overcomes	O
this	O
signal	O
loss	O
by	O
using	O
a	O
signal	O
modulation	O
technology	O
called	O
dual-polarization	O
quadrature	B-General_Concept
phase	I-General_Concept
shift	I-General_Concept
keying	I-General_Concept
(	O
DPQPSK	O
)	O
.	O
</s>
