Design and Implementation of a Tunable Optical Delay System

2013 ◽  
Vol 718-720 ◽  
pp. 698-702
Author(s):  
Min Zhang ◽  
Peng Fu ◽  
Nan Xu ◽  
Jie Luo ◽  
Zhuo Liu ◽  
...  
Keyword(s):  
Optical Networks ◽  
Communication Systems ◽  
Optical Signal ◽  
Delay System ◽  
Measuring Instruments ◽  
Signal Delay ◽  
Design And Implementation ◽  
Optical Delay ◽  
Optical Communication Systems ◽  
Implementation Method

This paper presents the design and implementation of a tunable optical delay system, capable of calibrating the optical signal delay by optical measuring instruments. It is also able to measure the delay by optical communication systems, the laser linewidth, the maximum radius of passive optical networks (PONs) and so on. Structure and implementation method are detailed and results show that it is able to measure the optical signal delay within an error of only +/-0.33ns.

scholarly journals Development of a fiber-optic system for testing instruments for monitoring nuclear power plants

2021 ◽  
Vol 2086 (1) ◽  
pp. 012160
Author(s):  
V M Pilipova ◽  
V V Davydov ◽  
V Y Rud
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Fiber Optic ◽  
Optical Signal ◽  
Signal Delay ◽  
Fiber Optic System ◽  
Testing Instruments

Abstract The necessity of testing the equipment for monitoring the operation of nuclear power plants is justified. It is proposed to use optical fiber and pulsed laser radiation for these purposes. It is established that optical fiber is more resistant to radiation than other communication systems. The design of a fiber-optic emergency simulator is developed. The calculation of its characteristics is carried out. Their experimental research was carried out. It was found that with an optical signal delay of 98.6 microseconds, the loss is – 26 dB with an uneven frequency response of ± 2 dB. This makes it possible to test the entire set of equipment that uses optical signals used to control a nuclear power plant.

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 Channel Coding in Optical Communication Systems

2016 ◽  
Vol 4 (2) ◽  
pp. 1-5
Author(s):  
Viktor Durcek ◽  
◽  
Michal Kuba ◽  
Milan Dado
Keyword(s):  
Error Correction ◽  
Optical Networks ◽  
Optical Communication ◽  
Channel Coding ◽  
Communication Systems ◽  
High Speed ◽  
Forward Error Correction ◽  
Error Correcting Codes ◽  
Optical Communication Systems ◽  
Forward Error

In this paper, an overview of various types of error-correcting codes is present. Three generations of forward error correction methods used in optical communication systems are listed and described. Forward error correction schemes proposed for use in future high-speed optical networks can be found in the third generation of codes.

Probing of nonlinear impairments in long range optical transmission systems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Farman Ali ◽  
Muhammad Shakeel ◽  
Asar Ali ◽  
Wajid Shah ◽  
Muhammad Salman Qamar ◽  
...  
Keyword(s):  
Communication Networks ◽  
Optical Communication ◽  
Communication Systems ◽  
Nonlinear Effects ◽  
Effective Area ◽  
Optical Signal ◽  
Linear Dispersion ◽  
Optical Communication Systems ◽  
The Impact ◽  
Nonlinear Impairments

Abstract Optical communication systems represent the backbone of modern long-haul communication networks. Nonlinear impairments such as the Kerr effect pose threat and deteriorate transmission in long-haul optical communication systems. At high launch powers, nonlinear effects become more important and their compensation is entailed to improve the transmission performance. In this paper, one of the major nonlinear effects of four waves mixing (FWM) is addressed using a theoretical model and validated through simulation in Optisystem. Two mechanisms with and without dispersion variation are investigated. The impact of FWM is investigated in terms of various values of launch power. The transmission performances of the proposed model are evaluated on the basis of bit error rate, optical signal to noise ratio, and quality factor using key parameters of effective area, nonlinear refractive index, nonlinear dispersion, and linear dispersion.

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