Results 21 to 30 of about 57,281 (193)

Ptychographic lens-less birefringence microscopy using a mask-modulated polarization image sensor

open access: yesScientific Reports, 2023
Birefringence, an inherent characteristic of optically anisotropic materials, is widely utilized in various imaging applications ranging from material characterizations to clinical diagnosis.
Jeongsoo Kim   +10 more
doaj   +1 more source

Birefringence analysis of segmented cladding fiber [PDF]

open access: yes, 2012
We present a full-vectorial modal analysis of a segmented cladding fiber (SCF). The analysis is based on the H-field vectorial finite element method (VFEM) employing polar mesh geometry.
Agrawal   +12 more
core   +1 more source

Polarization dynamics in spin‐VCSELs with integrated surface grating for high birefringence splitting

open access: yesElectronics Letters, 2023
Polarization dynamics in spin‐polarized vertical‐cavity surface‐emitting lasers (spin‐VCSELs) with high birefringence have recently been demonstrated to offer very high potential for optical data‐transmission systems that outperform their counterparts ...
Markus Lindemann   +6 more
doaj   +1 more source

High Birefringent ENZ Photonic Crystal Fibers [PDF]

open access: yes2018 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), 2018
A novel photonic crystal fiber (PCF) design that has a simple circular air hole configuration is reported that yields a very high birefringence. The enhanced birefringence is achieved by filling a select number of the air holes in its cladding with an epsilon-near-zero (ENZ) material to break the index symmetry of its X- and Y-polarization states ...
Tianyu Yang   +3 more
openaire   +1 more source

Polarization mode dispersion in radio-frequency interferometric embedded fiber-optic sensors [PDF]

open access: yes, 2001
The effect of fiber birefringence on the propagation delay in an embedded fiber-optic strain sensor is studied. The polarization characteristics of the sensor are described in terms of polarization mode dispersion through the principal states of ...
Dimenstein, O.   +5 more
core   +1 more source

Magnetic Field Measurements Based on Terfenol Coated Photonic Crystal Fibers

open access: yesSensors, 2011
A magnetic field sensor based on the integration of a high birefringence photonic crystal fiber and a composite material made of Terfenol particles and an epoxy resin is proposed.
Carla C. Kato   +4 more
doaj   +1 more source

Multiple designs with broad applicability for enhancing birefringence in low-loss terahertz HC-ARF

open access: yesResults in Physics, 2023
The use of hollow-core anti-resonant fiber (HC-ARF) as a transmission medium for the terahertz (THz) frequency range is attracting increasing attention from researchers. This paper introduces a low-loss, high birefringence anti-resonant fiber.
Zihan Liu   +5 more
doaj   +1 more source

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

open access: yesPhotonics, 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   +6 more
doaj   +1 more source

Dual-beam-scan Doppler optical coherence angiography for birefringence-artifact-free vasculature imaging [PDF]

open access: yes, 2012
Dual-beam-scan Doppler optical coherence angiography (DB-OCA) enables high-speed, high-sensitivity blood flow imaging. However, birefringence of biological tissues is an obstacle to vasculature imaging.
Jaillon Franck   +4 more
core   +1 more source

Temperature and Strain Sensitivities of High-Birefringence Elliptical Fibers [PDF]

open access: yes, 1992
We have analyzed and calculated the temperature and strain sensitivities of a high-birefringence double-clad elliptical fiber. We propose a method to minimize these sensitivities without increasing the fiber size or weight; this is achieved by selecting ...
Lit, John W.Y., Zhang, Feng
core   +2 more sources

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