scholarly journals Realization of a Long-haul Optical Link with Erbium Doped Fiber Amplifier

2018 ◽  
Vol 11 (2) ◽  
pp. 44-49
Author(s):  
Tomáš Huszaník ◽  
Ján Turán ◽  
Ľuboš Ovseník
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
High Speed ◽  
High Capacity ◽  
Fiber Amplifier ◽  
Optical Signal ◽  
Long Distance ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped

Abstract The need for high capacity and bandwidth in broadband communication systems increased rapidly in a few past years. Optical fiber is now the major transmission medium for fast and reliable communication replacing the old copper-based connections. However, with the deployment of optical networks, number of problems arise. The main problem of optical networks is the amplification in the long-distance transmission. Erbium doped fiber amplifier (EDFA) is the leading technology in the field of optical amplifiers. It uses erbium doped fiber to amplify optical signal. The importance of amplification in optical domain is relevant in long-haul and high-speed transmission systems. In this paper the study of the EDFA is presented. Based on an analytical study, the simulation model of the EDFA is created. The main aim is to determine the optimal parameters of the EDFA for a long-haul 16-channel DWDM (Dense Wavelength Division Multiplexing) system. The performance of the proposed DWDM system is mathematically analyzed using BER (Bit Error Rate) and Q factor.

scholarly journals EDFA AND EYCDFA POWER BOOSTER FOR SECURED, HIGH SPEED AND MULTIPLE WAVELENGTH SERVICES IN OPTICAL COMMUNICATION SYSTEMS USING WDM AND QUAD-SINGLE FORWARD AND TRI BACKWARD PUMPING TECHNIQUE

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
S. Semmalar ◽  
S. Malarkkan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Optical Power ◽  
Fiber Amplifier ◽  
Signal Power ◽  
Erbium Doped Fiber Amplifier ◽  
Output Optical Power ◽  
Wavelength Division

Proposed the EDFA and EYCDFA power booster (Erbium Doped Fiber Amplifier- Erbium ytterbium co doped fiber amplifier) with quad pumping for high speed and multi wavelength services in an optical communication. The proposed EDFA and EYCDFA power booster with WDM(Wavelength division multiplexing) simulated by dual forward and Backward pumping, Dual-backward pumping, Tri-single forward and dual backward pumping and Quadsingle forward and tri-backward pumping with respect to Pump power and fiber Length. The parameters Input Optical power, Output Optical power, Forward Signal power, Backward Signal power measured and determined the speed of transmission in all types of pumping methods. From that the proposed EDFA- ans EYCDFA power booster with WDM quad pumping is the best suitable for secured high speed optical telecommunication systems. The results shown in Quad pumping Output optical power is maximum 25.2dB and optimum spectral forward Signal power is 30.5dBm and very less spectral optical backward signal power of -25.4dBm with Length 5m

Nonlinear/dispersion compensation in dual polarization 128-QAM system incorporating optical backpropagation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Anu Chauhan ◽  
Innu Yadav ◽  
Priyanka Dhawan ◽  
Simarpreet Kaur ◽  
Ashu Verma
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Single Channel ◽  
Dispersion Compensation ◽  
Optical Network ◽  
Back Propagation ◽  
Fiber Amplifier ◽  
Dual Polarization ◽  
Long Distance ◽  
Erbium Doped Fiber Amplifier

Abstract In order to cater long distance optical network units (subscribers), optical networks with prolonged reach are needed. In this study, an optical back propagation (OBP) dual polarization (DP)-128 QAM-based system is proposed to cope with nonlinear impairments in wavelength division multiplexing (WDM) systems. In pre, post and symmetrical configurations, the OBP module consisting of the optical phase conjugator (OPC), Raman fiber amplifier (RFA) and erbium doped fiber amplifier (EDFAs) is examined. Using dispersion compensation fiber (DCF) as RFA with dual directional pumping, ideal OBP conditions are simulated. DP-128 quadrature amplitude modulation (QAM) system is proposed with symmetrical OBP and compared with single channel digital back propagation (DBP), wideband DBP, pre OBP-forward pumping, pre OBP with backward pumping, pre OBP with dual directional pumping, post OBP with dual directional pumping. It is observed that symmetrical OBP configuration with dual direction pumping provide enhanced results and successfully cover 6500 km at bit error rate (BER) 10−3.

scholarly journals Basic research for designing the erbium doped fiber amplifier in long distance cable communications

2020 ◽  
Vol 2 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Andreea-Rodica Sterian
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Laser Diodes ◽  
Basic Research ◽  
Optical Fiber Communication ◽  
Fiber Amplifier ◽  
Long Distance ◽  
Erbium Doped Fiber Amplifier ◽  
Fiber Communication ◽  
Erbium Doped

The paper presents some of the author results obtained in the research on the optical fiber amplifiers and Quantum Well (QW) laser diodes used in long distance optical communications as those transoceanic and other applications. Based on the mathematical models of the Erbium Doped Fiber Amplifier (EDFA) and of the QW laser diodes, implemented in software (especially, MATHLAB and MATHCAD but also in SIMULINK and SPICE), we get the operational diagrams and parameters of the specified devices and structures. For example, the classic Runge-Kutta method hasbeen successfully used for numerical simulation of complex nonlinear dynamics in fiber optic lasers.The obtained results are important in the design and characterization of the optical fiber communication systems, as those of the optical cables used in the naval and civil engineering.

scholarly journals Enhancement in the Gain of EDFA in Fibre Optic Communication

2019 ◽  
Vol 9 (2) ◽  
pp. 411-417
Keyword(s):  
Communication Systems ◽  
Noise Figure ◽  
Fiber Bragg Gratings ◽  
Data Communication ◽  
Bragg Gratings ◽  
Fiber Amplifier ◽  
Long Distance ◽  
Erbium Doped Fiber Amplifier ◽  
Gain Enhancement ◽  
Erbium Doped

With the evolvement ofhigh speed and long distance data communication systems, conventional band erbium-doped fiber amplifiers (C-EDFAs) are getting more attention in recent times. Major advantage of the C-band EDFA is that it provides the user to realize a system with wide bandwidth of 40 nm. But, from the reported works, it is evident that for Gain enhancement in C-band using EDFA is reported with the use of multiple stages, multiple pumps, Gain flattening filters etc. However, these techniques suffered from high cost, complex techniques and low performance.Here enhancement process was done through the narrowband Fiber Bragg Gratings (FBG) or fiber reflectors mirrors. In this work, a conventional band erbium doped fiber amplifier is proposed with high gain and less noise figure by incorporating the two fiber bragg gratings (FBGs) for amplified spontaneous noise reinjection. Maximum ASE is emerged at 1565 nmfor the at -55 dBm carrier powers. Maximum gain is found out to be 48.16 dB with noise figure of 5.29 dBm.

scholarly journals Dense Wavelength Division Multiplexing using Dispersion Fibre with Erbium Doped Fiber Amplifier

2019 ◽  
Vol 8 (11) ◽  
pp. 45-48 ◽  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Signal Transmission ◽  
Single Mode ◽  
Optical Signal ◽  
Dense Wavelength Division Multiplexing ◽  
Long Distance ◽  
Erbium Doped Fiber Amplifier ◽  
Single Beam ◽  
Wavelength Division ◽  
Erbium Doped

Dense wavelength division multiplexing is used in various broadband communications. It combines information from distinct sources on an optical fiber, each signal being transmitted simultaneously on its own distinct light wavelength. Radio over fibre is a hybrid system that has both fibre optic link and free space radio path. This paper aims to evaluate the performance of the system using Erbium Doped Fibre Amplifier, Single Mode Fibre and Dispersion compensating Fibre. Single beam of light is passed by the SMF and is used for long distance signal transmission. DCF is used to reduce the dispersion in the optical signal. EDFA reduces the degradation of the signal by cancelling the effect of attenuation. It is an optical repeater used to raise the intensity of the optical signal. Mach – Zehnder modulator is used for the modulation. The simulation is carried out by using optisystem software version 15.0. Various parameters like Q-factor, BER pattern, threshold, minimum BER are compared and estimated.

Investigations of Different Amplifiers in 16 × 40 Gb/S WDM System

2019 ◽  
Vol 40 (4) ◽  
pp. 341-346
Author(s):  
Kulwinder Singh ◽  
Karan Goel ◽  
Kamaljit Singh Bhatia ◽  
Hardeep Singh Ryait
Keyword(s):  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Fiber Amplifiers ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Erbium Doped ◽  
Eye Opening ◽  
Eye Closure

Abstract Different fiber amplifiers such as semiconductor optical amplifier, erbium-doped fiber amplifier and erbium ytterbium-co-doped fiber amplifier (EYCDFA) are investigated for 16×40 GB/s wavelength division multiplexing system. Various performance parameters including Q-factor, bit error rate, jitter, eye opening and eye closure are observed and analyzed. It is reported that EYCDFA is a better choice among the tested amplifiers. The proposed system is also investigated in terms of transmission distance.

scholarly journals Comparative Analysis of Erbium Doped Fiber Amplifier (EDFA) and Raman Optical Amplifier (ROA) in Nonlinear-CWDM System

2018 ◽  
Vol 10 (3) ◽  
pp. 144
Author(s):  
Dodi Zulherman ◽  
Sri Utami ◽  
Fahmi Fahmi
Keyword(s):  
Wavelength Division Multiplexing ◽  
System Performance ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
High Rate ◽  
Telecommunication Service ◽  
Raman Amplification ◽  
Erbium Doped Fiber Amplifier ◽  
Large Bandwidth ◽  
Erbium Doped

The massive demands for high-rate application drove the telecommunication service to use large bandwidth capacity. The Coarse Wavelength Division Multiplexing (CWDM), a common use in Metro-WDM, can be a solution to provide large bandwidth in optical communications. In a communications system, there are attenuation and nonlinear effect decreasing the system performance. In order to overcome the limitation imposed by electrical regeneration to maintain system performance, a means of optical amplification was sought. In this paper presents the comparison of two competing technologies emerged: Erbium Doped Fiber Amplifier (EDFA) and Raman Optical Amplifier (ROA) to overcome the attenuation in the nonlinear system. We designed the CWDM system using 8 channels with 20 nm channel spacing and 60 km length. The result was conducted by varying the CW Laser power using -8, -6, -4, -2, 0, 2, 4, and 6 dBm. Based on the result of the research, raman amplification can maintain the BER and the Q-factor of the CWDM system better than EDFA. In addition, the received power in raman amplification larger than that received in EDFA. In conclusion,a CWDM system using ROA amplifier has better performance for the system than using EDFA amplifier.

Performance Analysis of WDM-PON System Based on Optimized Remotely Pumped Erbium-Doped Fiber Amplifier (EDFA) Parameter

2015 ◽  
Vol 36 (2) ◽  
Author(s):  
N. Ahmed ◽  
Hilal A. Fadhil ◽  
S. A. Aljunid ◽  
Md. Sharafat Ali ◽  
Matiur Rahman
Keyword(s):  
Output Power ◽  
Wavelength Division Multiplexing ◽  
Noise Figure ◽  
Optical Network ◽  
Fiber Amplifier ◽  
Passive Optical Network ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Erbium Doped ◽  
Wdm Pon

AbstractIn this paper, the performance of wavelength division multiplexing-passive optical network (WDM-PON) system using the erbium-doped fiber amplifier (EDFA) is optimized and evaluated. The optimization is analyzed by finding the EDFA length range at which the output power produced are the highest and the pump power range at which the gain flatness produced are within the effective range (0.3 dB). After the optimization process, the optimized EDFA system produces the gain of 26.6±0.292 dB, noise figure of 3.82 dB and output power of 7 dBm and the system is then implemented into WDM system. The performance of WDM system is compared against the system without EDFA in terms of bit error rate (BER). Results obtained prove that the proposed system with the EDFA consistently performs better than the conventional system.

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