Développement de capteurs à fibre optique basés sur la résonance ...

*
Article i
Submitted to Thin Solid films
0.9
0.8
a)
0.7
E
o 0.6
1-
a)
0.5
o
Q-
0.4
2nd day
+
* .333
.345
0 0 .350
X x .355
)O X
X
X
12th day
(marked by
dashed lines)
ca
E 0.3
0.2
>t /-
0.1 .
, Coated layers: Ag and 2r02 layers
o
-25 -20 -15 -lO -5 0 5 10 15 20 25
IncJdent Angle Dey.
Fig.8 Evolution of an experimental sensor without thiol where the sensor is conserved in aIr and
the measurements are carried out in aqueous solutions with the refractive indices of 1.33, 1.345,
1.350, 1.355 respectively on the 2 and 121h days.
0.9
0.8
Detected medium:
Distilled water
0.7 of index i .333 >°
0
1
X
O x
a
List of coated layers:
Ag film
Thiol(long) film
Zr02 film
E 0.
o
z
0.2
O.
+ 4
'4' + 4thday
+ + 2lalday
40th day
X cc 70th day
-25 -20 -15 -'lO -5 0 5
Incïdent Angle (Dey.
10 5 20 25
Fig.9 Evolution of an experimental sensor with the long chain thiol acid, where the sensor is
conserved in air and the measurements are carried out in pure water on the 4th, 21a1 401h and 70th
days respectively.
18