<s>
The	O
concentricity	B-Device
error	I-Device
of	O
an	O
optical	B-Architecture
fiber	I-Architecture
is	O
the	O
distance	O
between	O
the	O
center	O
of	O
the	O
two	O
concentric	O
circles	O
that	O
specify	O
the	O
cladding	O
diameter	O
and	O
the	O
center	O
of	O
the	O
two	O
concentric	O
circles	O
that	O
specify	O
the	O
core	B-Device
diameter	I-Device
.	O
</s>
<s>
The	O
concentricity	B-Device
error	I-Device
is	O
used	O
in	O
conjunction	O
with	O
tolerance	O
fields	O
to	O
specify	O
or	O
characterize	O
optical	B-Device
fiber	I-Device
core	I-Device
and	O
cladding	O
geometry	O
.	O
</s>
