Specialty Optical Fibers Handbook

increases, an effect that can be problematic for fibers used in aggressive appli-

cations such as sensor systems in oil-well data logging. The properties of carbon-

coated fibers depend on the properties of both the carbon and the underlying

glass, which in turn depend on the processes used in making the hermetic fiber.

By establishing suitable qualification and certification tests, we can ensure that

carbon-coated fibers will meet a user’s requirements for providing enhanced

long-term fiber reliability.

REFERENCES

[1] Normann, R. et al. 2001. Development of fiber optic cables for permanent geothermal

wellbore deployment. In: Proceedings, Twenty-Sixth Workshop on Geothermal Reservoir

Engineering, Stanford University, Jan. 29–31, 2001. Stanford University, ...