<s>
Hard-clad	B-Device
silica	I-Device
(	O
HCS	O
)	O
or	O
polymer-clad	B-Device
fiber	I-Device
(	O
PCF	O
)	O
is	O
an	O
optical	B-Architecture
fiber	I-Architecture
with	O
a	O
core	B-Device
of	O
silica	O
glass	O
(	O
diameter	O
:	O
200µm	O
)	O
and	O
an	O
optical	O
cladding	O
made	O
of	O
special	O
plastic	O
(	O
diameter	O
:	O
230µm	O
)	O
.	O
</s>
<s>
In	O
contrast	O
to	O
all-silica	B-Device
fiber	I-Device
,	O
the	O
core	B-Device
and	O
cladding	O
can	O
be	O
separated	O
from	O
each	O
other	O
.	O
</s>
<s>
For	O
comparison	O
,	O
plastic	B-Application
optical	I-Application
fibers	I-Application
(	O
POF	O
)	O
have	O
low	O
bandwidths	O
and	O
transmission	O
rates	O
(	O
typically	O
100	O
Mbit/s	O
)	O
.	O
</s>
<s>
Regarding	O
bandwidth	O
and	O
distances	O
,	O
HCS	O
fibers	O
are	O
situated	O
between	O
POF	O
and	O
multimode	B-Device
or	O
singlemode	B-Device
fibers	I-Device
.	O
</s>
