<s>
An	O
addressed	B-Algorithm
fiber	I-Algorithm
Bragg	I-Algorithm
structure	I-Algorithm
(	O
AFBS	O
)	O
is	O
a	O
fiber	B-Device
Bragg	I-Device
grating	I-Device
,	O
the	O
optical	O
frequency	O
response	O
of	O
which	O
includes	O
two	O
narrowband	O
components	O
with	O
the	O
frequency	O
spacing	O
between	O
them	O
(	O
which	O
is	O
the	O
address	O
frequency	O
of	O
the	O
AFBS	O
)	O
being	O
in	O
the	O
radio	O
frequency	O
(	O
RF	O
)	O
range	O
.	O
</s>
<s>
An	O
addressed	B-Algorithm
fiber	I-Algorithm
Bragg	I-Algorithm
structure	I-Algorithm
can	O
perform	O
triple	O
function	O
in	O
fiber-optic	B-Algorithm
sensor	I-Algorithm
systems	O
:	O
a	O
sensor	O
,	O
a	O
shaper	O
of	O
double-frequency	O
probing	O
radiation	O
,	O
and	O
a	O
multiplexor	B-Protocol
.	O
</s>
<s>
The	O
key	O
feature	O
of	O
AFBS	O
is	O
that	O
it	O
enables	O
the	O
definition	O
of	O
its	O
central	O
wavelength	O
without	O
scanning	O
its	O
spectral	O
response	O
,	O
as	O
opposed	O
to	O
conventional	O
fiber	B-Device
Bragg	I-Device
gratings	I-Device
(	O
FBG	O
)	O
,	O
which	O
are	O
probed	O
using	O
optoelectronic	O
interrogators	O
.	O
</s>
<s>
The	O
concept	O
of	O
addressed	B-Algorithm
fiber	I-Algorithm
Bragg	I-Algorithm
structures	I-Algorithm
was	O
introduced	O
in	O
2018	O
by	O
Airat	O
Sakhabutdinov	O
and	O
developed	O
in	O
collaboration	O
with	O
his	O
scientific	O
adviser	O
,	O
Oleg	O
Morozov	O
.	O
</s>
<s>
The	O
light	O
is	O
transmitted	O
through	O
the	O
fiber-optic	B-Device
coupler	I-Device
9	O
,	O
then	O
enters	O
the	O
two	O
AFBSs	O
2.1	O
and	O
2.2	O
.	O
</s>
<s>
At	O
the	O
output	O
of	O
the	O
coupler	O
,	O
a	O
four-frequency	O
radiation	O
(	O
diagram	O
c	O
)	O
is	O
formed	O
,	O
which	O
is	O
sent	O
through	O
a	O
fiber-optic	B-Protocol
splitter	I-Protocol
6	O
.	O
</s>
