Results 31 to 40 of about 196,584 (354)
Single-shot non-interferometric measurement of the phase transmission matrix in multicore fibers [PDF]
, 2018 A simple technique for far-field single-shot non-interferometric determination of the phase transmission matrix of a multicore fiber with over 100 cores is presented. This phase retrieval technique relies on the aperiodic arrangement of the cores.Comment:
Alonso, Miguel A. +6 more
core +1 more source
Optics Express, 2012 Optical fibers are an excellent transmission medium for light and underpin the infrastructure of the Internet, but generally after fabrication their optical properties cannot be easily modified. Here, we explore the concept of nanomechanical optical fibers where, in addition to the fiber transmission capability, the internal core structure of the fiber
Lian, Zhenggang +10 more
openaire +5 more sources
Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry (Ф-OTDR)
Photonic Sensors, 2021 Phase-sensitive optical time domain reflectometry (Ф-OTDR) is an effective way to detect vibrations and acoustic waves with high sensitivity, by interrogating coherent Rayleigh backscattering light in sensing fiber. In particular, fiber-optic distributed
Yunjiang Rao +4 more
doaj +1 more source
Integrated optics for astronomical interferometry - VI. Coupling the light of the VLTI in K band [PDF]
, 2005 Our objective is to prove that integrated optics (IO) is not only a good concept for astronomical interferometry but also a working technique with high performance.
A. Delboulbé +32 more
core +4 more sources
Hierarchical Attention Neural Network for Event Types to Improve Event Detection
Sensors, 2022 Event detection is an important task in the field of natural language processing, which aims to detect trigger words in a sentence and classify them into specific event types.
Yanliang Jin +5 more
doaj +1 more source
Wide field interferometric imaging with single-mode fibers [PDF]
, 2002 Classical single-mode fiber interferometers, using one fiber per aperture, have very limited imaging capabilities and small field of view. Observations of extended sources (resolved by one aperture) cannot be fully corrected for wavefront aberrations ...
Berger +12 more
core +2 more sources
PhotoacousticsPhotoacoustic imaging (PAI) is an emerging hybrid imaging technology that combines the advantages of optical and ultrasound imaging. Despite its excellent imaging capabilities, PAI still faces numerous challenges in clinical applications, particularly ...
Liangjie Wang, Yi-Chao Meng, Yiming Qian
doaj +1 more source
F1000Research, 2022 Stimulated Brillouin scattering (SBS) is useful, among others for generating slow light, sensing and amplification. SBS was previously viewed as a poor method due to the limitation on optical power in high-powered photonic applications.
Siamak Dawazdah Emami +2 more
doaj +1 more source
Invited - Sensing applications based on all-optical excitation and interrogation of forward stimulated Brillouin scattering [PDF]
EPJ Web of ConferencesBoth backwards and forward Brillouin scattering are powerful tools for sensing applications. While most of the approaches lead to distributed fiber sensors applications, we present a number of all-optical techniques that allow fabricating point-to-point ...
Álvarez-Ocampo Carlos +7 more
doaj +1 more source
IEEE Photonics Journal, 2023 We theoretically and experimentally proposed the generation method of third-order orbital angular momentum (OAM) modes with reduced losses by cascading two adiabatic mode selective couplers (MSCs), in which the LP11 mode produced as an excitation mode ...
Mengdi Zhang +8 more
doaj +1 more source