All-fiber current transformer with integrated optical path and manufacturing technology

Abstract

The invention relates to an all-fiber current transformer with an integrated optical path and a manufacturing technology. The all-fiber current transformer comprises a photoelectric optical path integrated module and a modulation optical path integrated module which are connected with each other. When the photoelectric optical path integrated module and the modulation optical path integrated module are on different substrates, the photoelectric optical path integrated module and the modulation optical path integrated module are two modules packaged respectively, the output tail fiber of the photoelectric optical path integrated module and the input tail fiber of the modulation optical path integrated module are in zero-degree welding connection. When the photoelectric optical path integrated module and the modulation optical path integrated module are on the same substrate, the output tail fiber of the photoelectric optical path integrated module is employed an input tail fiber of the modulation optical path integrated module, and the photoelectric optical path integrated module and the modulation optical path integrated module are packaged in an integrated manner. The all-fiber current transformer has advantages of high signal to noise ratio, small size, simple installation and low production cost.

Description

technical field [0001] The invention relates to the technical field of current transformers, in particular to a novel all-optical fiber current transformer with modularized and integrated optical paths and a manufacturing process thereof. Background technique [0002] The current transformer plays the role of accurate and fast measurement of current in the power grid. It is the core equipment of the smart grid. The all-fiber-optic current transformer based on the Faraday magneto-optical effect can realize non-intrusive sensing and measurement of high-voltage current. It is a high-voltage electronic current transformer. The main development direction of the transformer. At present, the optical path of the mainstream all-fiber current transformer (FOCT) in China is composed of optical devices such as light sources, beam splitters, polarizers, straight waveguides (or Y waveguides), and photodetectors that are separated from each other and have independent packaging shells. , a...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of too many welding points, low signal-to-noise ratio, complex process, poor reliability and high production cost in the existing optical path design scheme of all-fiber current transformer, the present invention provides a new manufacturing process of all-fiber current transformer , realizing the modular and integrated optical path design of all-fiber current transformers, with the advantages of high signal-to-noise ratio, small size, easy installation and low production cost

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