GHz-Fast Multiplexed OAM Generation and Detection

Abstract

Here we propose an adaptive and intelligent scheme of multiplexed Orbital Angular Momentum (OAM)-based GHz-fast and robust transmissions of a noisy channel and demonstrate its functionality propagating two OAM beams using a slosh water tank.

High-performance optoelectronics for integrated photonic neural networks

“…Artificial neurons based on nanophotonic technologies can potentially provide the platform that can fulfill the challenging future technological needs. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Integrated photonic technology provides a solution to the limitations of current digital electronic counterparts like efficient fundamental computational operations such as weighted sum or addition, vector matrix multiplications, or convolutions technologically enabled by attojoule efficient electro-optic (EO) modulators, phase shifters, and combiners. Furthermore, high parallelism and bandwidth is provided by exploiting wavelength-, polarization-and/or mode-division multiplexing.…”

Michelson interferometric methods for full optical complex convolution

“…[41][42][43][44][45][46][47][48][49] At the same time, in optics, the Optical Fourier Transform (FT) and dot-product multiplication performed passively by a single lens or metalens have reduced computational complexity compared to logarithmic scaling in electronic processing units, [50][51][52][53][54][55][56] both free-space [57][58][59][60][61][62][63][64][65] and integrated photonic integrated circuits versions. [66][67][68][69][70][71][72][73][74][75][76][77][78][79][80] The only drawback of Spatial Light Modulators (SLMs) based optical computing systems would be the refresh rate of the device itself, but with recent research progress on novel phase-changing material and other 2D material as well as their corresponding applications, [81][82][83][84][85][86]…”

Free-space optical multiplexed orbital angular momentum beam identification system using Fourier optical convolutional layer based on 4f system

“…Machine learning already plays a crucial role in the fields of optics, [38][39][40][41] photonics [42][43][44][45][46][47][48][49][50][51] and computer science. [52][53][54][55][56][57] Learning-based Imaging and focusing through scattering medium, computer-generated holography based on machine learning have been studied. [58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75] In FSOC, Timothy Doster and Abbie T. Watnik firstly introduced new method to detect the active OAM modes in a transmission link by utilizing convolutional neural network (CNN) [1].…”