Results 41 to 50 of about 41,883 (280)

A Linear Birefringence Measurement Method for an Optical Fiber Current Sensor

Sensors, 2017
In this work, a linear birefringence measurement method is proposed for an optical fiber current sensor (OFCS). First, the optical configuration of the measurement system is presented.
Shaoyi Xu, Haiming Shao, Chuansheng Li, Fangfang Xing, Yuqiao Wang, Wei Li   +5 more
doaj   +1 more source

Comparison of intensity, phase retardation, and local birefringence images for filtering blebs using polarization-sensitive optical coherence tomography

Scientific Reports, 2018
Polarization-sensitive optical coherence tomography (PS-OCT) allows the recording of depth-resolved polarimetric measurements. It has been reported that phase retardation and local birefringence images can noninvasively detect fibrotic area in blebs ...
Shinichi Fukuda, Akari Fujita, Deepa Kasaragod, Simone Beheregaray, Yuta Ueno, Yoshiaki Yasuno, Tetsuro Oshika   +6 more
doaj   +1 more source

Real-Time Ferroelectric Domain Wall Dynamics During Electric Poling and Depoling. [PDF]

Adv Sci (Weinh)
Real‐time visualization of domain wall dynamics during alternating‐current poling, direct‐current poling, and electrical depoling in relaxor‐PT ferroelectric single crystals reveals distinct field‐dependent pathways and strong path dependence. Instant polarized light microscopy uncovers reversible domain wall nucleation, motion, and reconfiguration ...
Wang Z, Xu Z, Timofeeva A, Elnaggar H, Liu S, Pei Y, Henry R, O'Connor B, Shim E, So F, Peters K, Jiang X, Liu J.   +12 more
europepmc   +2 more sources

Photoinduced birefringence in azopolymers measured at 1550 nm [PDF]

EPJ Web of Conferences
Azobenzenes are a class of compounds presenting photoisomerization capabilities that allow the writing and erasure of birefringence along a desired direction.
Soares Beatriz, Silva Susana, Ribeiro Paulo, Frazão Orlando   +3 more
doaj   +1 more source

Birefringence-Managed Normal-Dispersion Fiber Laser Delivering Energy-Tunable Chirp-Free Solitons

Ultrafast Science, 2022
Chirp-free solitons have been mainly achieved with anomalous-dispersion fiber lasers by the balance of dispersive and nonlinear effects, and the single-pulse energy is constrained within a relatively small range.
Dong Mao, Zhiwen He, Qun Gao, Chao Zeng, Ling Yun, Yueqing Du, Hua Lu, Zhipei Sun, Jianlin Zhao   +8 more
doaj   +1 more source

Hybrid hollow-core polarization-maintaining fiber with high birefringence and wide single mode bandwidth

Results in Physics, 2021
A novel hybrid hollow-core polarization-maintaining fiber is proposed by combining the photonic bandgap mechanism and anti-resonant effect. High birefringence can be achieved by introducing a pair of negative curvature anti-resonant layers into the air ...
Yuru Guo, Xin Wang, Zhen Xing, Shuqin Lou   +3 more
doaj   +1 more source

Thermal Sensitivity of Birefringence in Polarization-Maintaining Hollow-Core Photonic Bandgap Fibers

Photonics, 2023
Polarization-maintaining (PM) fiber is the core sensitive component of a fiber optic gyroscope (FOG); its birefringence temperature stability is crucial for maintaining accuracy. Here, we systematically investigated the structural thermal deformation and
Lidong Wang, Meisong Liao, Fei Yu, Weichang Li, Jiacheng Xu, Lili Hu, Weiqing Gao   +6 more
doaj   +1 more source

Effect of 2-Methylthiazole Group on Photoinduced Birefringence of Thiazole-Azo Dye Host–Guest Systems at Different Wavelengths of Irradiation

Molecules, 2022
The photoinduced birefringence behaviors of host–guest systems based on heterocyclic thiazole–azo dyes with different substituents, dispersed into PMMA matrix, were investigated under three excitation wavelengths, i.e., 405 nm, 445 nm or 532 nm.
Beata Derkowska-Zielinska, Anna Kozanecka-Szmigiel, Dariusz Chomicki, Vitaliy Smokal, Yutaka Kawabe, Oksana Krupka   +5 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Birefringence and strain-induced crystallization of stretched cellulose acetate propionate films [PDF]

, 2017
We investigated wavelength dependence of birefringence (Δn) for cellulose acetate propionate (CAP) films stretched at various draw ratios (DRs) and strain rates (SRs), by comparing the result of cellulose triacetate (CTA). CAP exhibited an extraordinary
Nakao, Akichika, Nobukawa, Shogo, Shimada, Hikaru, Kondo, Misaki, Pulkerd, Panitha, Songsurang, Kultida, Yamaguchi, Masayuki   +6 more
core   +1 more source