Answers are grounded in this paper and cite their sources.
Optical waveguides fabricated by gamma-ray irradiation on polymer through a gold mask are presented. The gamma-ray induced index change is found almost linearly dependent on the dose of the irradiation. And the measured propagation losses are low enough for practical application. Due to the high penetrability of gamma ray, uniform refractive index change in depth can be easily achieved. Moreover, due to large-area printing, the uniformity of waveguide made by gamma-ray irradiation is much better than that by e-beam direct writing.
No takes yet. Share an insight, caveat, or question.
Lai et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: