2
Plastic Optical Fiber Specifications: HFBR-R/EXXYYY
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Recommended Operating Temperature
Installation Temperature
Short Term Tensile
Single Channel
Force
Dual Channel
Short Term Bend Radius
Long Term Bend Radius
Long Term Tensile Load
Flexing
Symbol
T
S,O
T
O
T
I
F
T
F
T
r
r
F
T
Min.
-55
-40
-20
Max.
+85
+85
+70
50
100
Unit
°C
°C
°C
N
N
mm
mm
N
Cycles
Note
1
2
3, 4
25
35
1
1000
4
Mechanical/Optical Characteristics, T
A
= -40 to +85
°
C unless otherwise specified.
Parameter
Cable
Standard Cable,
Attenuation
Type "R"
Extra Low Loss,
Type "E"
Reference
Standard Cable,
Attenuation
Type "R"
Extra Low Loss,
Type "E"
Numerical Aperture
Diameter, Core and Cladding
Diameter, Jacket
Propagation Delay Constant
Mass per Unit Length/Channel
Cable Leakage Current
Refractive Index Core
Cladding
Symbol
α
O
Min.
0.15
0.15
α
R
0.12
0.12
NA
D
C
D
J
l/v
I
L
n
0.46
0.94
2.13
Typ.
[5]
0.22
0.19
0.19
0.16
0.47
1.00
2.20
5.0
5.3
12
1.492
1.417
Max.
0.27
0.23
0.24
0.19
0.50
1.06
2.27
dB/m
Unit
dB/m
Condition
Source is HFBR-15XX
(660 mm LED, 0.5 NA)
= 50 meters
Source is 650 nm,
0.5 NA monochrometer,
= 50 meters
Note 7, Figure 1
>2 meters
Simplex Cable
Note 6
Without Connectors
50 kV, = 0.3 meters
mm
mm
ns/m
g/m
nA
Notes:
1. Installation temperature is the range over which the cable can be bent and pulled
without damage. Below -20°C the cable becomes brittle and should not be subjected to
mechanical stress.
2. Short Term Tensile Force is for less than 30 minutes.
3. Short Term Bend Radius is for less than 1 hour nonoperating.
4. 90° bend on 25 mm radius mandrel. Bend radius is the radius of the mandrel around
which the cable is bent.
5. Typical data are at 25°C.
6. Propagation delay constant is the reciprocal of the group velocity for propagation delay
of optical power. Group velocity is v=c/n where c is the velocity of light in free space
(3xl0
8
m/s) and n is the effective core index of refraction.
7. Note that
α
R
rises at the rate of about 0.0067 dB/°C, where the thermal rise refers to
the LED temperature changes above 25°C. Please refer to Figure 1 which shows the
typical plastic optical fiber attenuation versus wavelength at 25°C.
ETC [ ETC ]
