Results 21 to 30 of about 78,287 (278)

Analysis and Reduction of Nonlinear Effects in Optical Fiber Frequency Transfer

open access: yesApplied Sciences, 2023
Nonlinear effects in optical fiber frequency transfer have a significant impact on the precision of frequency transfer. We investigate the main nonlinear effects, including the Brillouin scattering and the Raman scattering, in optical fiber frequency ...
Jing Gao   +10 more
doaj   +1 more source

Observation of hypersonic phononic crystal effects in porous silicon superlattices [PDF]

open access: yes, 2009
Brillouin light scattering experiments were carried out on porous silicon superlattices with modulation wavelengths in the range 37–167 nm. Phonon frequencies deduced from the Brillouin spectra show good agreement with those obtained from an elastic ...
Aliev G., G. T. Andrews, L. C. Parsons
core   +1 more source

Hybrid Ytterbium/Brillouin Gain Assisted Partial Mode Locking in Yb-Doped Fiber Laser

open access: yesIEEE Photonics Journal, 2015
We have demonstrated experimentally and theoretically that the hybrid ytterbium/Brillouin gain can contribute to partial mode locking in the high-loss ytterbium-doped fiber laser.
Haibin Lu   +3 more
doaj   +1 more source

Effective Brillouin Gain Spectra Broadening for SBS Suppression Based on Pseudo Random Bit Sequence Phase Modulation in Fiber System

open access: yesIEEE Photonics Journal, 2021
We describe stimulated Brillouin scattering process in a fiber system with light field phase modulated by lowpass filtered and amplified pseudo random bit sequence (PRBS) using localized nonfluctuating source model.
Binglin Li   +5 more
doaj   +1 more source

Brillouin scattering of phonons in complex materials

open access: yesAdvances in Physics: X, 2018
Initially, the theory of propagation of long-wavelength acoustic phonons and Brillouin scattering of laser light in condensed matter is concisely summarized. Then, the case of two relevant classes of complex materials in which Brillouin scattering can be
Carlo E. Bottani, Daniele Fioretto
doaj   +1 more source

Benefits of Spectral Property Engineering in Distributed Brillouin Fiber Sensing

open access: yesSensors, 2021
As one of the most consolidated distributed fiber sensors based on stimulated Brillouin scattering, the Brillouin optical time-domain analyzer (BOTDA) has been developed for decades.
Cheng Feng, Thomas Schneider
doaj   +1 more source

Micro-Brillouin spectroscopy mapping of the residual density field induced by Vickers indentation in a soda-lime silicate glass [PDF]

open access: yes, 2012
High-resolution Brillouin scattering is used to achieve 3-dimensional maps of the longitudinal acoustic mode frequency shift in soda-lime silicate glasses subject to Vickers indentations.
Clément, S.   +4 more
core   +3 more sources

Detrimental Effect Elimination of Laser Frequency Instability in Brillouin Optical Time Domain Reflectometer by Using Self-Heterodyne Detection

open access: yesSensors, 2017
A useful method for eliminating the detrimental effect of laser frequency instability on Brillouin signals by employing the self-heterodyne detection of Rayleigh and Brillouin scattering is presented.
Yongqian Li   +3 more
doaj   +1 more source

Giant Enhancement of Stimulated Brillouin Scattering in the Subwavelength Limit [PDF]

open access: yes, 2011
Stimulated Brillouin scattering (SBS) is traditionally viewed as a process whose strength is dictated by intrinsic material nonlinearities with little dependence on waveguide geometry.
Camacho, Ryan   +4 more
core   +2 more sources

Brillouin Optical Correlation-Domain Technologies Based on Synthesis of Optical Coherence Function as Fiber Optic Nerve Systems for Structural Health Monitoring

open access: yesApplied Sciences, 2019
Brillouin optical correlation-domain technologies are reviewed as “fiber optic nerve systems” for the health monitoring of large structures such as buildings, bridges, and aircraft bodies.
Kazuo Hotate
doaj   +1 more source

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