Results 21 to 30 of about 9,843 (297)

Optical rheology of porcine sclera by birefringence imaging. [PDF]

open access: yesPLoS ONE, 2012
To investigate a relationship between birefringence and elasticity of porcine sclera ex vivo using polarization-sensitive optical coherence tomography (PS-OCT).Elastic parameters and birefringence of 19 porcine eyes were measured.
Masahiro Yamanari   +8 more
doaj   +1 more source

Locally pressed fibre Bragg grating pressure sensor [PDF]

open access: yes, 2006
A spectral-hole created by locally pressing a fibre Bragg grating exhibited a wavelength-shift within the FBG bandwidth. A sensitivity of 74.3pm/(N/mm) was obtained for pressure applied along the slow axis of a high birefringence ...
Ricardo N. Correia   +7 more
core   +1 more source

Discriminative Monitoring of Seamless Rail Force by a High-Birefringence Effect-Based Fiber Optic Sensing Method

open access: yesFrontiers in Physics, 2022
Nowadays, China has developed over 38,000-km high-speed railways (HSR). As one of the key elements in the HSR system, continuous welded rail (CWR) enables higher transportation efficiency, while demands for more robust inspection and maintenance ...
Yin Zhou   +7 more
doaj   +1 more source

Recent Progress in Distributed Fiber Optic Sensors

open access: yesSensors, 2012
Rayleigh, Brillouin and Raman scatterings in fibers result from the interaction of photons with local material characteristic features like density, temperature and strain.
Xiaoyi Bao, Liang Chen
doaj   +1 more source

Optical Polarization-Based Measurement Methods for Characterization of Self-Assembled Peptides’ and Amino Acids’ Micro- and Nanostructures

open access: yesMolecules, 2022
In recent years, self-assembled peptides’ and amino acids’ (SAPA) micro- and nanostructures have gained much research interest. Here, description of how SAPA architectures can be characterized using polarization-based optical measurement methods is ...
Amir Handelman
doaj   +1 more source

Birefringent Glass‐Engraved Tilted Pillar Metasurfaces for High Power Laser Applications

open access: yesAdvanced Science, 2023
Birefringent materials—which are highly needed in high power laser systems—may be limited in usage due to the laser‐induced damage threshold of traditional birefringent materials.
Nathan J. Ray   +4 more
doaj   +1 more source

Effect of CO 2 Laser Annealing on Stress Applying Parts Contributing Toward Birefringence Modification in Regenerated Grating in Polarization Maintaining Fiber

open access: yesIEEE Photonics Journal, 2015
In this paper, we have demonstrated birefringence modification in regenerated grating in polarization maintaining fiber (RGPMF) by using a CO2 laser annealing technique.
Man-Hong Lai   +5 more
doaj   +1 more source

Birefringence Variation Independent Fiber-Optic Current Sensor Using Real-Time SOP Measurement

open access: yesIEEE Photonics Journal, 2017
We propose a birefringence variation independent fiber-optic current sensor based on polarization diversity and a real-time state of polarization measurement technique.
Yinping Liu, Lin Ma, Zuyuan He
doaj   +1 more source

Enhancement of Birefringence in Reduced Graphene Oxide Doped Liquid Crystal

open access: yesNanomaterials, 2020
We investigated the effect of reduced graphene oxide (rGO) doping on the birefringence of 5CB liquid crystal (LC). The characteristics of the synthesized rGO and LC-rGO composite with different rGO concentrations were analyzed by atomic force microscopy,
Mareddi Bharath Kumar   +6 more
doaj   +1 more source

Distributed measurement of birefringence in uncoupled multicore fibers

open access: yes, 2021
We report the results of the first distributed measurement of local birefringence performed on a nominally-uncoupled four-core fiber. The data show correlation between the intrinsic birefringence of the individual cores.
Santagiustina, M   +6 more
core   +1 more source

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