Results 31 to 40 of about 409,995 (301)

Bend loss in structured optical fibres

open access: yesOptics Express, 2007
Bend loss characterisation tests are carried out in two air-silica structured fibres: a periodic photonic crystal fibre and a non-periodic fibre. An explanation based on resonant coupling between interstitial zones accounts for the improved confinement of non-periodic structured optical fibres.
Cicero, Martelli   +3 more
openaire   +2 more sources

Bending loss of terahertz pipe waveguides

open access: yesOptics Express, 2010
We present an experimental study on the bending loss of terahertz (THz) pipe waveguide. Bending loss of pipe waveguides is investigated for various frequencies, polarizations, core diameters, cladding thicknesses, and cladding materials. Our results indicate that the pipe waveguides with lower guiding loss suffer lower bending loss due to stronger mode
Jen-Tang, Lu   +4 more
openaire   +2 more sources

Transmission of Slow Light through Photonic Crystal Waveguide Bends

open access: yes, 2005
The spectral dependence of a bending loss of cascaded 60-degree bends in photonic crystal (PhC) waveguides is explored in a slab-type silicon-on-insulator system.
Baba   +16 more
core   +1 more source

Wideband Low Loss Bending-Resistance Hollow-Core Fiber With Hybrid Claddings of Antiresonance and Photonic Bandgap Guidance Mechanisms

open access: yesIEEE Photonics Journal, 2023
Hollow-core anti-resonant fibers (HC-ANF) have the advantages of low scattering loss, wide bandwidth and simplicity of preparation, but are sensitive to bend, which limits their practical applications.
Yundong Hao   +4 more
doaj   +1 more source

Performance of bolted steel-beam to CFST-column joints using stiffened angles in column-removal scenario [PDF]

open access: yes, 2019
This paper presents three experimental investigations on the performance of steel-beam to CFST-column joints using stiffened angle, long bolts and fin plate under a middle column removal scenario. Three specimens were designed and tested.
Fu, F., Gao, S., Guo, L., Xu, M.
core   +1 more source

Optimization of crystal extraction experiment [PDF]

open access: yes, 1996
Using a computer model for the crystal extraction, we investigate the bent-crystal parameters optimal for the extraction experiment. The optimal crystal curvature is found to be near 1 GeV/cm (for pv/R), i.e.
Akbari   +21 more
core   +3 more sources

Improved arrayed-waveguide-grating layout avoiding systematic phase errors [PDF]

open access: yes, 2011
We present a detailed description of an improved arrayed-waveguide-grating (AWG) layout for both, low and high diffraction orders. The novel layout presents identical bends across the entire array; in this way systematic phase errors arising from ...
Driessen, Alfred   +6 more
core   +4 more sources

New bending loss formula explaining bends on loss curve

open access: yesElectronics Letters, 1987
A new bending loss formula for single-mode fibres is presented. Comparison with measurements and conventional theory shows good agreement. Reported bends on the loss curves for matched- and depressed-clad fibres are explained.
openaire   +1 more source

Clinical Practice Guideline for Evaluation and Management of Peripheral Nervous System Manifestations in Sjögren's Disease

open access: yesArthritis Care &Research, Accepted Article.
Objectives Sjögren's disease is an autoimmune disorder that can impact multiple organ systems, including the peripheral nervous system (PNS). PNS manifestations, which can exist concurrently, include mononeuropathies, polyneuropathies, and autonomic nervous system neuropathies. To help patients and providers in the decision‐making process, we developed
Anahita Deboo   +19 more
wiley   +1 more source

An Ultra-Low Bending Loss Negative Curvature Hollow Core Fiber With a Polygon Jacketing Layer

open access: yesIEEE Photonics Journal, 2023
We design and simulate a new type of hollow-core antiresonant fiber with the polygon jacketing layer. Through numerical calculations, the confinement loss is approximately 0.003 dB/km at 1.45 μm and the bandwidth is ∼ 410 nm @
Yun-Hao Xu   +6 more
doaj   +1 more source

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