Journal ArticleDOI
Generation of optical vortices in layered helical waveguides
TLDR
In this article, the authors studied the possibility of changing the topological charge of incident beams by layered helical structures consisting of planar layers and showed that such structures can effectively change the topology charge of the incoming beam by unity.Abstract:
We study the possibility of changing the topological charge of incident beams by layered helical structures consisting of planar layers. We show that such structures can effectively change the topological charge of the incoming beam by unity. The problem of the fundamental mode and optical vortex passage through such a layered helical waveguide of a finite length is solved. The spectral characteristics of these processes are obtained. It is shown that such a waveguide can operate as a broadband compact generator of optical vortices from both regular and singular beams.read more
Citations
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Journal ArticleDOI
Excitation and separation of vortex modes in twisted air-core fiber.
TL;DR: The twisted air-core photonic crystal fiber (TAPCF) is investigated which can improve the relative energy distribution of the OAM modes and is of potential interest for increasing channel capacity in optical telecommunications.
Journal ArticleDOI
Topological Zeeman effect and circular birefringence in twisted photonic crystal fibers
Thomas Weiss,Gordon K. L. Wong,Fabio Biancalana,Stephen M. Barnett,X. M. Xi,P. St. J. Russell +5 more
TL;DR: In this article, the polarization properties of twisted six-fold symmetric photonic crystal fibers were analyzed and the authors showed that the governing equation for the fiber modes resembles the Pauli equation for electrons in weak magnetic fields, which implies index splitting between left and right circularly polarized modes.
Journal ArticleDOI
Online fabrication scheme of helical long-period fiber grating for liquid-level sensing.
TL;DR: A novel online fabrication scheme of helical long-period fiber gratings by directly twisting a standard single-mode fiber in a microheater to eliminate the accompanying twisting spiral for real-time spectral monitoring and a stepping mechanical system to accurately control the twisting length in fabrication.
Journal ArticleDOI
Generation and conversion of optical vortices in long-period twisted elliptical fibers.
TL;DR: It is theoretically demonstrated that long-period twisted elliptical fibers have the ability to change in a certain wavelength range the topological charge of the incoming field by two units and can generate charge-2 optical vortices from the incoming Gaussian beams.
Journal ArticleDOI
Dynamics of topological light states in spiraling structures.
TL;DR: Resonant vortex dynamic generation, including revivals, is shown to be possible not only in waveguides mediated by total internal reflection but also in Bragg-guiding hollow-core geometries.
References
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Book Chapter
Optical waveguide theory
TL;DR: In this article, the authors outline the key principles and parameters which describe and define the operation of optical waveguides and fibres, including dispersion and non linear effects, and provide the foundation for understanding the detailed operation of a wide variety of optical components.
Book
Optical Waves in Crystals: Propagation and Control of Laser Radiation
Amnon Yariv,Pochi Yeh +1 more
TL;DR: The Wiley Classics Library as discussed by the authors consists of selected books that have become recognized classics in their respective fields with these new unabridged and inexpensive editions, Wiley hopes to extend the life of these important works by making them available to future generations of mathematicians and scientists.
Journal ArticleDOI
Sculptured Thin Films: Nanoengineered Morphology and Optics
TL;DR: This text, presented as a short course at the SPIE Optical Science and Technology Symposium, couples detailed knowledge of thin-film morphology with the optical response characteristics of STF devices to learn to design and engineer STF materials and devices for future applications, particularly with optical applications.