Results 21 to 30 of about 9,261 (301)

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

IEEE 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, Kok-Sing Lim, Md. Rajibul Islam, Dinusha S. Gunawardena, Hang-Zhou Yang, Harith Ahmad   +5 more
doaj   +1 more source

Enhancement of Birefringence in Reduced Graphene Oxide Doped Liquid Crystal

Nanomaterials, 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, Mohammad Awwal Adeshina, Daekyung Kang, Youngho Jee, Taewan Kim, Muhan Choi, Jonghoo Park   +6 more
doaj   +1 more source

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

IEEE 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

An impact-insensitive fiber optic current transformer based on polarization maintaining photonic crystal fiber delay coil

Frontiers in Physics, 2023
When the polarization-maintaining fiber (PMF) delay coil of a fiber optic current transformer (FOCT) is impacted, external forces on the optical fibers and change of their birefringence may lead to extra phase errors during the propagation of optical ...
Hongze Gao, Guochen Wang, Wei Gao, Bo Zhao, Bo Zhao, Runfeng Zhang, Boya Zhang, Fan Yang   +7 more
doaj   +1 more source

Optical imaging of antiferromagnetic domains in ultrathin CoO(001) films

New Journal of Physics, 2020
Antiferromagnetic (AFM) domains in ultrathin CoO(001) films are imaged by a wide-field optical microscopy using magneto-optical birefringence effect.
Jia Xu, Haoran Chen, Chao Zhou, Dong Shi, Gong Chen, Yizheng Wu   +5 more
doaj   +1 more source

Imaging polarimetry for the determination of stress constraint in transparent solids

EPJ Web of Conferences, 2010
Using a Mueller matrix polarimeter based on liquid crystal cells [1] and the forward polar decomposition [2], we study the evolution of the birefringence property induced by an increasing compression of a Plexiglas sample.
De Martino A., Orlik X., Richert M.
doaj   +1 more source

Recent Progress in Distributed Brillouin Sensors Based on Few-Mode Optical Fibers

Sensors, 2021
Brillouin scattering is a dominant inelastic scattering observed in optical fibers, where the energy and momentum transfer between photons and acoustic phonons takes place.
Yong Hyun Kim, Kwang Yong Song
doaj   +1 more source

Long-Time Relaxation of Stress-Induced Birefringence of Microcrystalline Alkali Halide Crystals

Molecules, 2018
Alkali halide single crystals are most commonly used as the diluent matrix in the tablet method or disk technique for spectroscopic measurements. However, stress-induced birefringence (SIB) of alkali halides as well as intrinsic birefringence manifest ...
Hiroki Ueno, Ryoga Arakane, Yoshihisa Matsumoto, Tomoki Tsumura, Akihito Kitazaki, Toru Takahashi, Shotaro Hirao, Yasushi Ohga, Takunori Harada   +8 more
doaj   +1 more source

Measurements of flow-induced birefringence in microfluidics [PDF]

Biomicrofluidics, 2016
In this study, we demonstrate the use of a microscopic circular polariscope to measure the flow-induced birefringence in a microfluidic device that represents the kinematics of fluid motion optically. Unlike the commercial birefringence microscope employed in the previous studies, our approach is able to provide direct measurement of retardance, which ...
Chen-Li, Sun, Hung-Yen, Huang
openaire   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source