Abstract
The effects of 1.17-MeV and 1.33-MeV gamma rays on the propagation characteristics of a gallium arsenide directional coupler optical waveguide is reported. Under doses of 4100-190000 rad (GaAs), no measurable change in either coupling characteristics or transmission loss was found. However, it is uncertain whether the radiation-induced loss component in the optical waveguides is less than 3 dB. A suggestion for eliminating this optical-alignment-induced experimental uncertainty is given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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