Technical Specifications of the Submarine Fiber Optic Channel Bandwidth/Capacity in Optical Fiber Transmission Systems

AbstractThis work outlines technical specifications of the undersea fiber optic communication channel bandwidth, capacity with taken into account the maximum and minimum extended fiber cost in the presence of amplifiers stations. The number of amplifiers in the amplification stage are addressed based on the amplifier distance to strength the light signal in water depth after 5 km distance. The fiber channel capacity is estimated at different water depth and at the surface of the water. Minimum input signal power and required detectable received power are adjusted to ensure the high data rates in submarine cable systems under the best and worst conditions of the seawater pressure. The study emphasizes the high data rates transmission can be achieved at a distance of 10 km depth.

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Mitigation of Phase Noise and Nonlinearities for High Capacity Radio-over-Fiber Links

Electronics ◽

10.3390/electronics10030345 ◽

2021 ◽

Vol 10 (3) ◽

pp. 345 ◽

Cited By ~ 2

Author(s):

Muhammad Kamal Asif Khan ◽

Farman Ali ◽

Muhammad Irfan ◽

Fazal Muhammad ◽

Faisal Althobiani ◽

...

Keyword(s):

Phase Noise ◽

Communication Networks ◽

Wavelength Division Multiplexing ◽

Radio Over Fiber ◽

High Data ◽

Ofdm Modulation ◽

Data Rates ◽

Modulation Schemes ◽

High Data Rates ◽

Bandwidth Capacity

Radio-over-fiber (RoF) links successfully provide high data rates and bandwidth capacity with a low complexity system architecture, as compared to its counterpart digital-RoF. In addition, the compound of quadrature amplitude modulation (QAM) and orthogonal frequency division multiplexed (OFDM) modulation schemes further enhance the process of these achievements. However, high data rates and bandwidth-capacity-supported RoF links face nonlinearities (NLs), linear distortions (LDs), and phase noise challenges that degrade the reliability of communication networks (CNs). Therefore, in this paper, to suppress NLs, LDs, and phase noise, next generation cloud radio access networks (CRANs) are investigated using RoF links and wavelength division multiplexing (WDM) methodology based on 16, 32, and 64 QAM-OFDM modulation schemes. The receiver of the proposed framework is designed, applying an improved digital signal processing (DSP) system that includes overlap frequency domain equalization (OFDE), a synchronization process, and time domain equalization (TDE). Theoretical and simulation models are organized for estimating the proposed RoF link with the aid of different values of transmission ranges, input power, output power, bit rate, bits per symbol, channel spacing, and the number of users. The fitness of the model matches that of existing approaches.

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Uncooled lasers for high data rates

10.1117/12.693349 ◽

2006 ◽

Author(s):

Marina Meliga

Keyword(s):

High Data ◽

Data Rates ◽

High Data Rates

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Gamma/neutron analysis for SNM signatures at high-data rates (greater than 10^7 cps) for single-pulse active interrogation

10.1117/12.883912 ◽

2011 ◽

Author(s):

Istvan Dioszegi ◽

Cynthia Salwen ◽

Leon Forman

Keyword(s):

Single Pulse ◽

Active Interrogation ◽

High Data ◽

Data Rates ◽

High Data Rates

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Detektion von Bauteilfehlern aus Maschinendaten/Detection of workpiece flaws out of machine tool data – possibilities and limits

wt Werkstattstechnik online ◽

10.37544/1436-4980-2019-11-12-30 ◽

2019 ◽

Vol 109 (11-12) ◽

pp. 828-832

Author(s):

M. Weigold ◽

A. Fertig ◽

C. Bauerdick

Keyword(s):

Quality Assurance ◽

Machine Tool ◽

Machine Tools ◽

Machining Time ◽

Parallel Detection ◽

High Data ◽

Novel Approach ◽

Data Rates ◽

High Data Rates

Durch zunehmende Vernetzung und Digitalisierung von Werkzeugmaschinen und Automatisierungskomponenten ergibt sich die Möglichkeit, Signale mit hohen Datenraten und großer Vielfalt aufzuzeichnen. Der vorliegende Beitrag beschreibt erste Untersuchungen zur Realisierbarkeit einer prozessparallelen Detektion von Bauteilfehlern auf Basis interner Werkzeugmaschinendaten. Dabei werden Potenziale und Grenzen für diesen neuartigen Ansatz zur hauptzeitparallelen Qualitätssicherung aufgezeigt.   The increasing networking and digitization of machine tools and automation components provides the opportunity to record signals with high data rates and great diversity. This paper describes first investigations on the feasibility of a process-parallel detection of component defects on the basis of internal machine tool data. Potentials and limits for this novel approach to quality assurance parallel to machining time are presented.

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