# A Novel Delay-time Enlarged 3-D Gravitational Wave Detection System

## TL;DR

This paper introduces a novel 3D gravitational wave detection system using optical fibers and delay-time enlargement, achieving high phase sensitivity and offering a compact, cost-effective solution for GW detection.

## Contribution

It presents the first implementation of an optical fiber-based delay-time enlarged 3D interferometer for gravitational wave detection, combining high sensitivity with compact design.

## Key findings

- Achieves 10^-22 phase sensitivity for GW detection
- First use of optical fiber as delay medium in a self-delayed interferometer
- Demonstrates a compact, cost-effective 3D GW detection system

## Abstract

A novel delay-time enlarged 3-dimensional gravitational wave (GW) detection system is presented. The operation principle is described. The basic specification requirements for all the critical components are analyzed. The whole system consists of three optical fibers along three axes, a narrow linewidth ultra-stable laser, an ultra-stable radio frequency (RF) source, three recirculating optical fiber loops, three phase monitoring/stabilizing units, three phase detectors, and a computer based data analysis unit. With the given specifications of the critical components, the whole system may achieve 10-22 phase sensitivity, and therefore can be used for the GW detection. This is the first time, to the best of our knowledge, one has implemented an optical fiber as the delay-time enlarged transmission medium for a self-delayed interferometer and the first 3-dimensional self-delayed interferometer. Since optical fiber is used as the transmission medium and the recirculating optical fiber loop for increasing the phase sensitivity, the whole system can be built both compactly and cost efficiently, allowing a 3-dimensional self-delayed interferometer for GW detection to be created.

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Source: https://tomesphere.com/paper/1705.10944