Compact interferometers, called phasemeters, make it possible to operate over a large
range while ensuring a high resolution. Such performance is required for the stabilization of …

Optical interferometry has emerged as a cornerstone technology for high-precision length
measurement, offering unparalleled accuracy in various scientific and industrial …

The present work proposes a novel capacitive absolute positioning sensor based on time
grating. The sensor includes a fine incremental-displacement measurement component …

We demonstrate a quadrature phase-shifted optical demodulation scheme for low-
coherence fiber-optic Fabry-Perot interferometric sensors. The main part of the demodulator …

The optical path length stability of the off-axis four-reflection telescope is one of the key
technical indicators for the TianQin gravitational wave detection system. In the MHz …

This paper describes the design and realization of a heterodyne laser interferometer system
that is applicable to metrology comparison. In this research, an iodine-stabilized Nd: YAG …

Tracing a resonance frequency of a high quality factor (Q) optical cavity facilitates
subpicometer displacement measurements of the optical cavity via Pound–Drever–Hall …

A high-sensitivity hydraulic pressure sensor is proposed, which consists of a Fabry–Perot
interferometer (FPI) filled with a polymer film of polydimethylsiloxane (PDMS). The FPI …

为解决装置结构复杂与测量分辨率低的问题, 提出了一种利用单模光纤和耦合器组成的位移测量
系统, 耦合器输出端两臂连接准直镜头, 照射在被测物体正反两面形成差动结构 …

In this Letter, we propose a simple structure of an orthogonal type double Michelson
interferometer. The orthogonal detection method overcomes the problems of uneven …