Technical Information

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The graphs above show the transmission characteristics for fiber optic bundles and single fiber cables. The curves for the bundles have included in the transmission the losses due to packing factor, reflections at the entrance and exit, and the losses within the fiber itself. Please contact us if you need a more detailed explanation or to discuss your requirements.

See these links for individual fiber attenuation curves:

 

• UV SOLARIZATION
• HIGH-POWER FIBER OPTICS

Individual Optical Fiber Bend Radius

Below is a table of the bend radius for a single fiber of the core sizes listed. Fiber bundle and cable bend radius may be further limited by sheath material, fiber quantity, and length.

FIBER CORE
SIZE
(µM)

CONTINUOUS
BEND RADIUS
(mm)

MOMENTARY
BEND RADIUS
(mm)

 

50
100
200
400
600
1000
1500

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31
35
61
120
165
275
413

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12.5
14
25
48
66
110
165

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Optical Fiber Acceptance Angle

The acceptance angle of an optical fiber is dependent upon the refractive indices of its core and cladding materials. The table below shows the acceptance angle of the most common types of optical fiber:

FIBER TYPE
(CORE/CLAD)

NUMERICAL
APERATURE

FULL ACCEPTANCE
ANGLE

F#

SILICA/SILICA
 

0.12

13.8

4.2

SILICA/SILICA

0.22

25.4

2.3

SILICA/PLASTIC

0.39

46.0

1.3

SILICA/PLASTIC

0.48

57.4

1.0

BOROSILICATE GLASS

0.56

68.1

0.9

PLASTIC (PMMA)

0.55

66.7

0.9