<s>
The	O
C	B-Protocol
form-factor	I-Protocol
pluggable	I-Protocol
(	O
CFP	O
,	O
100G	B-Protocol
form	O
factor	O
pluggable	O
,	O
where	O
C	O
is	O
"	O
hundred	O
"	O
)	O
is	O
a	O
multi-source	O
agreement	O
to	O
produce	O
a	O
common	O
form-factor	O
for	O
the	O
transmission	O
of	O
high-speed	O
digital	O
signals	O
.	O
</s>
<s>
The	O
c	O
stands	O
for	O
the	O
Latin	O
letter	O
C	O
used	O
to	O
express	O
the	O
number	O
100	O
(	O
centum	O
)	O
,	O
since	O
the	O
standard	O
was	O
primarily	O
developed	O
for	O
100	B-Protocol
Gigabit	I-Protocol
Ethernet	I-Protocol
systems	O
.	O
</s>
<s>
The	O
CFP	O
was	O
designed	O
after	O
the	O
small	B-Protocol
form-factor	I-Protocol
pluggable	I-Protocol
transceiver	I-Protocol
(	O
SFP	O
)	O
interface	O
,	O
but	O
is	O
significantly	O
larger	O
to	O
support	O
100Gbit/s	O
.	O
</s>
<s>
While	O
the	O
electrical	O
connection	O
of	O
a	O
CFP	O
uses	O
lanes	O
in	O
each	O
direction	O
(	O
RX	O
,	O
TX	O
)	O
,	O
the	O
optical	O
connection	O
can	O
support	O
both	O
and	O
variants	O
of	O
100Gbit/s	O
interconnects	O
(	O
typically	O
referred	O
to	O
as	O
100GBASE-SR10	O
in	O
100meter	O
MMF	B-Device
,	O
100GBASE-LR10	O
and	O
100GBASE-LR4	O
in	O
10km	O
SMF	B-Device
reach	O
,	O
and	O
100GBASE-ER10	O
and	O
100GBASE-ER4	O
in	O
40km	O
SMF	B-Device
reach	O
respectively	O
.	O
)	O
</s>
<s>
CFP	O
transceivers	O
can	O
support	O
a	O
single	O
100Gbit/s	O
signal	O
like	O
100GbE	B-Protocol
or	O
OTU4	B-Protocol
or	O
one	O
or	O
more	O
40Gbit/s	O
signals	O
like	O
40GbE	B-Protocol
,	O
OTU3	B-Protocol
,	O
or	O
STM-256/OC	O
-768	O
.	O
</s>
<s>
The	O
Optical	O
Internetworking	O
Forum	O
in	O
2016	O
published	O
the	O
CFP2-ACO	B-Protocol
or	O
CFP2	O
-	O
Analog	O
Coherent	O
Optics	O
Module	O
Interoperability	O
Agreement	O
(	O
IA	O
)	O
.	O
</s>
<s>
This	O
IA	O
supports	O
a	O
configuration	O
where	O
the	O
digital	B-Architecture
signal	I-Architecture
processor	I-Architecture
(	O
DSP	O
)	O
is	O
on	O
the	O
main	O
board	O
and	O
analog	O
optical	O
components	O
are	O
on	O
the	O
module	O
.	O
</s>
<s>
The	O
ACO	O
interface	O
can	O
be	O
used	O
in	O
coherent	O
optics	O
applications	O
when	O
the	O
link	O
delivers	O
a	O
flexible	O
amount	O
of	O
bandwidth	O
to	O
the	O
system	O
,	O
for	O
example	O
when	O
combined	O
with	O
FlexE	B-Protocol
.	O
</s>
