Consideration of the influence of the relativity theory for photonic circuits operation in space conditions

The key parameter of any photonic circuit (including the integrated circuit – PIC) is the refractive index. In this paper, the refractive index is represented by the component of the metric tensor: n = ε^(0.5) = g00^(0.5). Then the special relativity theory (SRT) is taken into account – the influence of velocity on the metric tensor is calculated, and the general relativity theory (GRT) – the influence of gravity. As an example, the difference in the photonic circuit operation on Earth and on Mars is presented.