Universal description of geometric phases in higher-order optical modes bearing orbital angular momentum

2010 ◽  
Vol 35 (20) ◽  
pp. 3535 ◽  
Author(s):  
Steven J. M. Habraken ◽  
Gerard Nienhuis
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Higher Order ◽  
Geometric Phases ◽  
Optical Modes

Digitalized Geometric Phases for Parallel Optical Spin and Orbital Angular Momentum Encoding

ACS Photonics ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1333-1338 ◽  
Author(s):  
Peng Chen ◽  
Shi-Jun Ge ◽  
Wei Duan ◽  
Bing-Yan Wei ◽  
Guo-Xin Cui ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Geometric Phases

Deep learning as a tool to distinguish between high orbital angular momentum optical modes

2016 ◽  
Author(s):  
E. M. Knutson ◽  
Sanjaya Lohani ◽  
Onur Danaci ◽  
Sean D. Huver ◽  
Ryan T. Glasser
Keyword(s):  
Angular Momentum ◽  
Deep Learning ◽  
Orbital Angular Momentum ◽  
Optical Modes

scholarly journals Controlling light’s helicity at the source: orbital angular momentum states from lasers

2017 ◽  
Vol 375 (2087) ◽  
pp. 20150436 ◽  
Author(s):  
Andrew Forbes
Keyword(s):  
Angular Momentum ◽  
Solid State ◽  
Orbital Angular Momentum ◽  
Laser Cavity ◽  
Solid State Lasers ◽  
On Demand ◽  
Twisted Light ◽  
Optical Modes ◽  
On Chip

Optical modes that carry orbital angular momentum (OAM) are routinely produced external to the laser cavity and have found a variety of applications, thus increasing the demand for integrated solutions for their production. Yet such modes are notoriously difficult to produce from lasers due to the strict symmetry requirements for their creation, together with the need to break the degeneracy in helicity. Here, we review the progress made since 1992 in producing such twisted light modes directly at the source, from gas to solid-state lasers, bulk to integrated on-chip solutions, through to generic devices for on-demand OAM in both scalar and vector forms. This article is part of the themed issue ‘Optical orbital angular momentum’.

scholarly journals Controllable all-fiber generation/conversion of circularly polarized orbital angular momentum beams using long period fiber gratings

Nanophotonics ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 287-293 ◽  
Author(s):  
Ya Han ◽  
Yan-Ge Liu ◽  
Zhi Wang ◽  
Wei Huang ◽  
Lei Chen ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Higher Order ◽  
Fiber Grating ◽  
Telecommunication System ◽  
Circularly Polarized ◽  
Long Period ◽  
Flexible Mode ◽  
Long Period Fiber Gratings ◽  
Core Modes

AbstractMode-division multiplexing (MDM) is a promising technology for increasing the data-carrying capacity of a single few-mode optical fiber. The flexible mode manipulation would be highly desired in a robust MDM network. Recently, orbital angular momentum (OAM) modes have received wide attention as a new spatial mode basis. In this paper, we firstly proposed a long period fiber grating (LPFG) system to realize mode conversions between the higher order LP core modes in four-mode fiber. Based on the proposed system, we, for the first time, demonstrate the controllable all-fiber generation and conversion of the higher order LP core modes to the first and second order circularly polarized OAM beams with all the combinations of spin and OAM. Therefore, the proposed LPFG system can be potentially used as a controllable higher order OAM beam switch and a physical layer of the translating protocol from the conventional LP modes communication to the OAM modes communication in the future mode carrier telecommunication system and light calculation protocols.

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