Current transformer based on diamond NV color center

Abstract

The invention provides a current transformer based on a diamond NV color center, and the current transformer comprises an optical fiber which is of an annular structure, the optical fiber between a light input end and a light output end of the optical fiber is provided with at least one notch, and each notch is formed in the mode that the outermost layer of the optical fiber is tangential to a core layer in the radial direction, so that part of the core layer is exposed to the outside. Each notch is used for leaking a part of light transmitted in the optical fiber; the middle part of the annular structure is used for placing a current-carrying conductor; the at least one diamond containing the nitrogen vacancy color center is arranged at the notches in a one-to-one correspondence manner; the excitation light source is used for inputting excitation light to the light input end of the optical fiber; and the at least one first photoelectric detector and the at least one first filter are in one-to-one correspondence with the at least one diamond. The structure is simple, the occupied space is small, simplification of spatial layout can be achieved, input of exciting light can be achieved only through one exciting light source, the light source structure can be simplified, then the structure of the mutual inductor is simplified, and the miniaturization degree of the mutual inductor is improved.

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