All fiber gravitational wave measuring teaching demonstration system and method

Abstract

The invention provides an all fiber gravitational wave measuring teaching demonstration system. Single-color incident laser with the stable frequency emitted by a signal transmitting module is injected into a Michelson interference module composed of a coupler, an optical switch, a Faraday rotation lens, a sound wave source, an optical fiber coil and a sound insulation box, wherein the arm lengthof the Michelson interference module is adjustable; interference signals are obtained, and a signal collecting and processing module composed of a photoelectric detector and a signal analyzer and processor is used for achieving measuring, analyzing and processing of the interference signals are achieved. The invention further provides an all fiber gravitational wave measuring teaching demonstration method, due to a Michelson interferometer with the adjustable arm length, experimental demonstration of the interference measuring principle and the relation between the arm length and the gravitational wave sensitivity is achieved, and the design that according to traditional gravitational wave measuring teaching demonstration, an existing using measuring system is restored only in form, and principle demonstration is lacked is broken through. Meanwhile, progressive teaching is adopted, use is convenient, the experiment effect is visual, and the system can be widely applied to physical experiment teaching practice.

Description

technical field [0001] The invention belongs to the field of optics and measurement technology, in particular to an all-fiber gravitational wave measurement teaching demonstration system and method. Background technique [0002] According to general relativity, the presence of matter warps spacetime, creating gravity. Cosmic events, such as the Big Bang, the rotation of asymmetric binary stars, and supernova explosions, etc., will cause distortions in the nearby space-time structure and cause gravitational ripples, forming gravitational waves. Because of this, the measurement and research of gravitational waves has far-reaching scientific significance. [0003] At present, the commonly used gravitational wave detection devices in the world are basically based on optical interferometers. Its working principle is to convert the stress stretching of the interference arm caused by gravitational waves into the change of the light phase through the change of the light propagation...

AI Technical Summary

Problems solved by technology

[0005] The traditional gravitational wave measurement teaching and demonstration system usually highly restores the currently used LIGO for demonstration. However, for the gravitational wave measurement principle, such as the demonstration of the Michelson interferometer principle, and the sensitivity improvement principle, such as the relationship between the arm length and the system sensitivity principle, there is no clear teaching experiment display

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