The 62.5/125/250 micron optical fiber manufactured by Lucent SFT was tested for gamma radiation resistance at the NASA Goddard Space Flight Center Cobalt60 chamber.

The fiber was tested with 1300 nm light, at 20.7 rads/min and 5 rads/min at –25°C and at 32.3 rads/min and 5 rads/min at +25°C. Data was recorded during exposure until the attenuation reached levels below that of the optical detection data acquisition system. All gathered data is presented here along with extrapolation equations for other dose rates.