Unlike single mode fibers the loss resulting from macrobending is not a linear function of the length. On a 60 mm mandrel 50% of the attenuation is resulting from the first 12 of the 100 turns. This is even more so on a smaller diameter mandrel.
APPLICATIONS AND DESIGN
Graded index fibers being designed for medium and short distance applications are well suited for on board applications.
In order to fulfill the specific environment needs of such application (temperature, humidity, vibrations, reliability, etc.) several design are offered :
• Standard GI
• Harsh environment GI
• “Flightguide” for aerospace applications
• “Geofibers” for geophysical applications.