2

Plastic Optical Fiber Specifications: HFBR-R/EXXYYY

Absolute Maximum Ratings

Parameter

Symbol

Min.

Max.

Unit

Note

Storage and Operating Temperature

-55

+85

°C

Recommended Operating Temperature

-40

+85

°C

Installation Temperature

-20

+70

°C1

Short Term Tensile

Single Channel

50

N

2

Dual Channel

100

N

Short Term Bend Radius

r

25

mm

3, 4

Long Term Bend Radius

r

35

mm

Long Term Tensile Load

1N

Flexing

1000

Cycles

4

Parameter

Symbol

Min.

Max.

Unit

Condition

Cable

Standard Cable,

α

O

0.15

0.22

0.27

dB/m

Source is HFBR-15XX

Attenuation

Type "R"

(660 mm LED, 0.5 NA)

Extra Low Loss,

0.15

0.19

0.23

= 50 meters

Type "E"

Reference

Standard Cable,

α

R

0.12

0.19

0.24

dB/m

Source is 650 nm,

Attenuation

Type "R"

0.5 NA monochrometer,

Extra Low Loss,

0.12

0.16

0.19

= 50 meters

Type "E"

Note 7, Figure 1

Numerical Aperture

NA

0.46

0.47

0.50

>2 meters

Diameter, Core and Cladding

0.94

1.00

1.06

mm

Diameter, Jacket

2.13

2.20

2.27

mm

Simplex Cable

Propagation Delay Constant

l/v

5.0

ns/m

Note 6

Mass per Unit Length/Channel

5.3

g/m

Without Connectors

Cable Leakage Current

12

nA

50 kV,

= 0.3 meters

Refractive Index

Core

n

1.492

Cladding

1.417

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

7. Note that

α

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.

Force