Simultaneous temperature and strain measurement with a distributed Brillouin loss system is proposed by use of the parameters Brillouin frequency, power, and bandwidth, for PANDA, bow-tie, and tiger polarization-maintaining fibers for the first time to our knowledge. The expressions for simultaneous temperature and strain sensing and the maximum errors and rms values of temperature and strain measurements are derived with three combinations of the parameters: (1) power and Brillouin frequency, (2) bandwidth and Brillouin frequency, and (3) bandwidth and Brillouin power. Our experiments demonstrate that simultaneous temperature and strain sensing at 20-cm spatial resolution for Brillouin frequency combined with bandwidth the strain/temperature resolutions are 39 microepsilon/2 degrees C (PANDA), 126 microepsilon/3 degrees C (bow tie), and 598 microepsilon/16 degrees C (tiger); for the Brillouin frequency combined with power the strain/temperature resolutions are 153 microepsilon/8 degrees C (PANDA) and 237 microepsilon/4 degrees C (bow tie); and for the bandwidth combined with power the strain/temperature resolutions are 135 microepsilon/38 degrees C (PANDA) and 195 microepsilon/38 degrees C (bow tie).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.29.001342 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unveiling anharmonic scattering in van der Waals semiconductor GaPS through Raman spectroscopy and theoretical calculation.
iScience
November 2024
School of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China.
The van der Waals thiophosphate GaPS presents additional opportunities for gallium-based semiconductors, but limited research on phonon interactions has hindered optimization on thermal properties. This research undertakes a comprehensive investigation into the anharmonic phonon scattering within GaPS. The findings reveal pronounced anharmonic scattering, with both cubic and quartic phonon scatterings significantly influencing phonon redshift and broadening.
View Article and Find Full Text PDFNon-Abelian lattice gauge fields in photonic synthetic frequency dimensions.
Nature
January 2025
Edward L. Ginzton Laboratory, Stanford University, Stanford, CA, USA.
Article Synopsis
- Non-Abelian gauge fields play a crucial role in explaining spin-related phenomena across various fields of physics, and lattice models help in exploring their applications.
- Researchers successfully demonstrated SU(2) lattice gauge fields for photons in synthetic frequency dimensions, marking a significant advancement since this had not been previously achieved.
- The study reveals the properties of these lattice gauge fields, such as Dirac cones and their implications for topological physics, which could enhance photonic technologies by controlling photon spins in innovative ways.
In recent years, cavity optomagnonics has received considerable research interest, and the notions drawn from non-Hermitian physics have also attracted attention. Based on Faraday effect and Cotton-Mouton effect, we theoretically propose a scheme to realize exceptional point (EP) in a cavity optomagnonic system. The scheme relies on Brillouin scattering (BLS), i.
View Article and Find Full Text PDFOut-of-Plane Longitudinal Sound Speed Determination in GaS by Broadband Time-Domain Brillouin Scattering.
ACS Omega
December 2024
The Ultrafast Electron Imaging Lab, Department of Chemistry, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo N2L 3G1, Canada.
Two-dimensional semiconducting gallium sulfide (GaS) has garnered notable interest for its distinct structural and optical properties, which position it as a promising candidate material for various applications ranging from photodetection and photovoltaics to nonlinear frequency conversion. In this work, we determined the out-of-plane longitudinal sound velocity, , via impulsive time-domain femtosecond broadband Brillouin scattering measurements performed on a single flake-like GaS crystal. We obtained a value (3140 ± 20) m/s, which yields an out-of-plane compressive elastic constant, = (38.
View Article and Find Full Text PDFOptical excitation and detection of high-frequency Sezawa modes in Si/SiO system decorated with NiFe nanodot arrays.
Ultrasonics
November 2024
Department of Condensed Matter and Materials Physics, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 106, India. Electronic address:
Surface acoustic waves have emerged as one of the potential candidates for the development of next-generation wave-based information and computing technologies. For practical devices, it is essential to develop the excitation techniques for different types of surface acoustic waves, especially at higher microwave frequencies, and to tailor their frequency versus wave vector characteristics. We show that this can be done by using ultrashort laser pulses incident on the surface of a multilayer decorated with a periodic array of metallic nanodots.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!