Integrated photonics is poised to become a mainstream solution for high-speed data communications and sensing in harsh radiation environments,such as outer space,high-energy physics facilities,nuclear power plants,and...
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Integrated photonics is poised to become a mainstream solution for high-speed data communications and sensing in harsh radiation environments,such as outer space,high-energy physics facilities,nuclear power plants,and test fusion *** the impact of radiation damage in optical materials and devices is thus a prerequisite to building radiation-hard photonic systems for these *** this paper,we report real-time,in situ analysis of radiation damage in integrated photonic *** devices,integrated with an optical fiber array package and a baseline-correction temperature sensor,can be remotely interrogated while exposed to ionizing radiation over a long period without compromising their structural and optical *** also introduce a method to deconvolve the radiation damage responses from different constituent materials in a *** approach was implemented to quantify gamma radiation damage and post-radiation relaxation behavior of SiO2-cladded SiC photonic *** findings suggest that densification induced by Compton scattering displacement defects is the primary mechanism for the observed index change in ***,post-radiation relaxation in amorphous SiC does not restore the original pre-irradiated structural state of the *** results further point to the potential of realizing radiation-hard photonic device designs taking advantage of the opposite signs of radiation-induced index changes in SiC and SiO2.
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