Results 21 to 30 of about 108,515 (267)

Asymptotic analysis of V-BLAST MIMO for coherent optical wireless communications in Gamma-Gamma turbulence [PDF]

open access: yes, 2018
This paper investigates the asymptotic BER performance of coherent optical wireless communication systems in Gamma-Gamma turbulence when applying the V-BLAST MIMO scheme. A new method is proposed to quantify the performance of the system and mathematical
Gao, Chao   +3 more
core   +1 more source

A Modulation Format Identification Method Based on Amplitude Deviation Analysis of Received Optical Communication Signal

open access: yesIEEE Photonics Journal, 2019
Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal.
Zhao Zhao   +3 more
doaj   +1 more source

Beam-steering metasurfaces assisted coherent optical wireless multichannel communication system

open access: yesNanophotonics, 2023
The metasurface based beam-steering devices with the advantages of large steering angles, arbitrary channels and ultra-compactness have played an important role for data allocation and exchange in the optical wireless communication.
Tao Jin   +13 more
doaj   +1 more source

Review on vortex beams with low spatial coherence

open access: yesAdvances in Physics: X, 2019
Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on.
Xianlong Liu, Jun Zeng, Yangjian Cai
doaj   +1 more source

Light Localization and Principal Mode Propagation in Optical Fibers

open access: yesFrontiers in Physics, 2021
The capacity of optical fiber communications has grown exponentially since its implementation decades ago. Optical fiber amplifiers, wavelength division multiplexing, and coherent communications have all enabled discontinuous growth.
Daniel A. Nolan, Dan T. Nguyen
doaj   +1 more source

FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems

open access: yesIEEE Photonics Journal, 2016
In this paper, we propose a rate-compatible forward error-correcting (FEC) scheme based on low-density-parity check (LDPC) codes together with its software reconfigurable unified field-programmable gate array (FPGA) architecture.
Ding Zou, Ivan B. Djordjevic
doaj   +1 more source

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO3

open access: yesAdvanced Science, 2023
Birefringence, which modulates the polarization of electromagnetic wave, has been commercially developed and widely used in modern photonics. Fostered by high‐frequency signal processing and communications, feasible birefringence technologies operating ...
Tao Sun   +16 more
doaj   +1 more source

Machine Learning for Self-Coherent Detection Short-Reach Optical Communications

open access: yesPhotonics, 2023
Driven by emerging technologies such as the Internet of Things, 4K/8K video applications, virtual reality, and the metaverse, global internet protocol traffic has experienced an explosive growth in recent years.
Qi Wu   +14 more
doaj   +1 more source

Volterra-assisted Optical Phase Conjugation: a Hybrid Optical-Digital Scheme For Fiber Nonlinearity Compensation [PDF]

open access: yes, 2018
Mitigation of optical fiber nonlinearity is an active research field in the area of optical communications, due to the resulting marked improvement in transmission performance.
Bayvel, Polina   +2 more
core   +2 more sources

Twisted Spatiotemporal Optical Vortex Random Fields

open access: yesIEEE Photonics Journal, 2021
We present twisted spatiotemporal optical vortex (STOV) beams, which are partially coherent light sources that possess a coherent optical vortex and a random twist coupling their space and time dimensions.
Milo Hyde
doaj   +1 more source

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