Results 21 to 30 of about 84,499 (278)

Steel Beam Compressive Strain Sensor Using Single-Mode-Multimode-Single-Mode Fiber Structure

open access: yesIEEE Photonics Journal, 2016
A steel beam compressive strain sensor using single-mode-multimode-single-mode (SMS) fiber structure is demonstrated. Parallel measurements are made using an electrical resistance (ER) strain gauge along with the SMS to sense the compressive strain on ...
S. E. F. Masnan   +6 more
doaj   +1 more source

An accurate and robust metrological network for coherent optical frequency dissemination

open access: yesNew Journal of Physics, 2021
We introduce multi-branch repeater laser stations (MLSs) for the dissemination of an ultra-stable signal from one point to multiple users and the simultaneous evaluation of the stability and accuracy of multiple links.
Etienne Cantin   +5 more
doaj   +1 more source

The error of transferring the size of a unit of length – a meter in the nanometer range using the nanomeasuring machine

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
The paper describes the principle of measuring linear dimensions using a nano-measuring machine (NMM), which implements the method of measuring three coordinate axes in the range of 25X25X5 mm3.
A. A. Bagdun, V. L. Solomakho
doaj   +1 more source

The ST7 interferometer [PDF]

open access: yesClassical and Quantum Gravity, 2004
11 pages, 5 figures including 1 photo, for special issue of "Classical and Quantum Gravity," proceedings of Amaldi ...
Spero, Robert, Kuhnert, Andreas
openaire   +2 more sources

Optical Inclinometer Based on a LPG-Taper Series Configuration

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
This article presents the development of an inclinometer device based on a Mach-Zehnder interferometer considering the effects caused by temperature variations. It was demonstrated the operation of a LPG-taper system for angle measurements. The practical
Renato Luiz Faraco Filho   +3 more
doaj   +1 more source

Phase Feedback Active Stabilisation Of A Multiplexed Fibre Interferometer [PDF]

open access: yes
Current optical technologies for surface measurement such as white light scanning interferometry (WLSI) can produce sub-nanometric resolution areal height information.
Martin, Haydn, Jiang, Xiang
core   +4 more sources

Two - mirror resonator as a high resolution length –sensing interferometer [PDF]

open access: yesKirkuk Journal of Science, 2011
Same basic properties of resonators from a wave – optical and from a ray resonator were investigated. These properties play a pivoted role in determining both the spectral properties of optical resonators and the behavior of rays inside such resonators ...
Suran D. Yaseen
doaj   +1 more source

Optimization of a field-widened Michelson interferometer [PDF]

open access: yes, 1985
This paper considers the optical design of a wide-angle fixed-path Michelson interferometer consisting of two arm glasses and an air gap. It is shown that this configuration can be optimized to give (a) extra large fringes (over 50° in diameter) over a
Gault, W.A.   +5 more
core   +1 more source

Advanced Virgo: Status of the Detector, Latest Results and Future Prospects

open access: yesUniverse, 2021
The Virgo detector, based at the EGO (European Gravitational Observatory) and located in Cascina (Pisa), played a significant role in the development of the gravitational-wave astronomy.
Diego Bersanetti   +5 more
doaj   +1 more source

WAMDII: wide-angle Michelson Doppler imaging interferometer for Spacelab [PDF]

open access: yes, 1985
A wide-angle Michelson Doppler imaging interferometer (WAMDII) is described that is intended to measure upper atmospheric winds and temperatures from naturally occurring visible region emissions, using Spacelab as a platform.
Gault, W.A.   +8 more
core   +1 more source

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