100 Gigabit Internet why and how : the technology behind it [PDF]
, 2010 The need to keep transmission capacity growing is a never ending process which is becoming more and more challenging to fulfill. Over the years we have witnessed data rates to grow from less than one bit per second all the way up to tens of Giga bits per
Glesk, I.
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FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems
IEEE 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
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Machine Learning for Self-Coherent Detection Short-Reach Optical Communications
Photonics, 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
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Coherent optical communications enhanced by machine intelligence
Machine Learning: Science and Technology, 2020 Abstract Accuracy in discriminating between different received coherent signals is integral to the operation of many free-space communications protocols, and is often difficult when the receiver measures a weak signal. Here we design an optical communication scheme that uses balanced homodyne detection in combination with an unsupervised
Sanjaya Lohani, Ryan T. Glasser
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High sensitivity optical coherence detector optimization [PDF]
, 2001 An optimal optical filtering scheme for an optical coherence detection system gives very high detection sensitivities (-30dB) for a partially coherent source.
Coutinho, R.C. +7 more
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Programmable on-chip synthesis and reconstruction of partially coherent two-mode optical fields [PDF]
APL PhotonicsPartially coherent light is typically studied in the context of freely propagating continuous fields. Recent developments have indicated the existence of a “coherence advantage” in multimode optical communications, where partially coherent light ...
Amin Hashemi +4 more
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Light Localization and Principal Mode Propagation in Optical Fibers
Frontiers 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
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Multiple Wavelength Free-Space Laser Communications [PDF]
, 2003 Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas +9 more
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Coherent polarization shift keying modulated free space optical links over a Gamma-Gamma turbulence channel [PDF]
, 2011 Problem statement: The optical signal propagating through the Free Space Optical (FSO) channel suffers from irradiance and phase fluctuations caused by the atmospheric turbulence, which results in Bit Error Rate (BER) performance degradation ...
Ghassemlooy, Zabih +7 more
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Enforcing Energy Balance in Coherently Superimposed Optical Vortices
IEEE Photonics Journal, 2018 The generation of optical beams with multiple, mutually coherent orbital-angular-momentum (OAM) modes using phase gratings is analyzed from the perspective of energy distribution and radial mode composition.
Jaime Cisternas +2 more
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