Results 31 to 40 of about 33,655 (295)

Chromatically-corrected, high-efficiency, multi-colour, multi-plane 3D imaging [PDF]

open access: yes, 2012
It is shown that grisms, a grating and prism combination, are a simple way to achieve chromatic control in 3D multi-plane imaging. A pair of grisms, whose separation can be varied, provide a collimated beam with a tuneable chromatic shear from a ...
Dalgarno, Paul A   +5 more
core   +1 more source

Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation

open access: yes, 2015
The replacement of bulk refractive optical elements with diffractive planar components enables the miniaturization of optical systems. However, diffractive optics suffers from large chromatic aberrations due to the dispersion of the phase accumulated by ...
Aieta, Francesco   +3 more
core   +1 more source

Triple Coupled Ring‐Core Fiber with Dual Highly Dispersive Windows for Orbital Angular Momentum Mode

open access: yesAdvanced Photonics Research, 2022
Orbital angular momentum (OAM) beams, featured by the helical phase front and doughnut intensity profile, have been demonstrating great potential for various applications. Ring‐core optical fiber is also experimentally proven to be an effective waveguide
Wenpu Geng   +9 more
doaj   +1 more source

Retardation and reduction of pulse distortion by group-velocity dispersion through pulse shaping [PDF]

open access: yes, 1995
We show that a reduction in the pulse distortion caused by chromatic dispersion can be achieved through pulse shaping. We argue that a simple binary phase mask in the Fourier plane of the laser spectrum can improve the transmission of short pulses in a ...
Al A. Salvatore   +5 more
core   +2 more sources

Low-Complexity Chromatic Dispersion Equalization FIR Digital Filter for Coherent Receiver

open access: yesPhotonics, 2022
This paper proposes a novel and efficient low-complexity chromatic dispersion equalizer (CDE) based on finite impulse response (FIR) filter architecture for polarization-multiplexed coherent optical communication systems.
Zicheng Wu   +4 more
doaj   +1 more source

Theoretical Analysis of the Optical Propagation Characteristics in a Fiber-Optic Surface Plasmon Resonance Sensor

open access: yesSensors, 2013
Surface plasmon resonance (SPR) sensor is widely used for its high precision and real-time analysis. Fiber-optic SPR sensor is easy for miniaturization, so it is commonly used in the development of portable detection equipment.
Xiaolin Zheng   +5 more
doaj   +1 more source

FIBER DISPERSION MEASUREMENTS USING MACH-ZEHNDER INTERFEROMETER

open access: yesTạp chí Khoa học
We present an efficient technique for measuring chromatic dispersion using a modified Mach-Zehnder interferometer in conjunction with with a supercontinuum light source.
Le Canh Trung
doaj   +1 more source

Novel High Negative Chromatic Dispersion Photonic Crystal Fiber with Low Confinement Loss [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2016
In this paper, we propose a novel dual core concentric photonic crystal fiber with high negative chromatic dispersion and low confinement loss. Finite element method with perfectly matched layers (PMLS) is used to investigate the guiding properties.
OUADAH Mohammed Chamse Eddine   +1 more
doaj  

Accurate Chromatic Dispersion Characterization of Photonic Integrated Circuits

open access: yesIEEE Photonics Journal, 2012
An accurate technique to characterize chromatic dispersion and its slope versus wavelength is reported. The method is based on a heterodyne Mach-Zehnder interferometer, which is immune to thermal phase noise by using a counterpropagating reference beam ...
S. Mas, J. Matres, J. Marti, C. J. Oton
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

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