<s>
A	O
fiber-optic	B-Device
adapter	I-Device
connects	O
two	O
optical	B-Device
fiber	I-Device
connectors	I-Device
in	O
the	O
fiber	B-Architecture
optic	I-Architecture
lines	O
.	O
</s>
<s>
Bare	O
fiber	O
adapter	O
is	O
used	O
as	O
the	O
medium	O
to	O
temporarily	O
link	O
the	O
bare	O
optical	B-Architecture
fiber	I-Architecture
to	O
fiber	B-Architecture
optic	I-Architecture
equipment	O
.	O
</s>
<s>
Available	O
with	O
FC	O
,	O
SC	O
,	O
ST	O
.	O
LC	O
,	O
MU	O
,	O
SMA	B-Protocol
connectors	I-Protocol
with	O
round	O
or	O
square	O
type	O
press	O
button	O
.	O
</s>
<s>
A	O
fiber	B-Device
optic	I-Device
coupler	I-Device
is	O
a	O
device	O
used	O
in	O
optical	B-Architecture
fiber	I-Architecture
systems	I-Architecture
with	O
one	O
or	O
more	O
input	O
fibers	O
and	O
one	O
or	O
several	O
output	O
fibers	O
.	O
</s>
<s>
Wavelength-sensitive	O
couplers	O
are	O
used	O
as	O
multiplexers	B-Protocol
in	O
wavelength-division	B-Architecture
multiplexing	I-Architecture
(	O
WDM	O
)	O
telecom	O
systems	O
to	O
combine	O
several	O
input	O
channels	O
with	O
different	O
wavelengths	O
,	O
or	O
to	O
separate	O
channels	O
.	O
</s>
