Improvement of the Monitoring Systems of Fiber Optical Communication Lines

Bogachkov, Igor V.; Trukhina, A. I.; Gorlov, N. I.

doi:10.1109/apeie.2018.8545374

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…The DQPSK is shown to improve the BER performance, as compared with conventional QPSK, but the trade‐off lies between the additional cost for DQPSK implementation and amount of performance improvement. The CBA is used to assess the worth of the proposed system by comparing its usefulness with the current system in terms of their returns on the use of public resources 34,35 . Mathematically, CBA is given as

CBA = Integral system cost / acceptable rate of connections

…”

Section: Cost Benefit Analysismentioning

confidence: 99%

Alleviation of nonlinear channel effects in long‐haul and high‐capacity optical transmission networks

Ali

Habib

Muhammad

et al. 2021

Int J Communication

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Summary Optical transmission networks (OTxNs) provide a cost‐effective solution towards ultrahigh data intercontinental transmission. However, nonlinear effects such as four‐wave mixing (FWM) and cross‐phase modulation (XPM) are the major performance limiting factors for OTxNs. This paper proposes the use of differential quadrature phase shift keying (DQPSK) modulation format and uneven channel spacings for dispersion compensation and investigates the nonlinear mitigation performance for a 32 channels ultradense wavelength division multiplexing (UDWDM) with data rate of up to 10 Gbps per channel. In addition, this paper presents an analysis on power budget and power penalties with a cost benefit analysis (CBA) for the proposed framework. The transmission link of the proposed UDWDM model is analyzed in terms of bit error rate (BER) for various lengths of optical fiber in long‐haul transmission, launch power, nonlinear effective area, and nonlinear refractive index. The analytical model is developed for mitigation of nonlinearity for the modeled UDWDM long‐haul and ultrahigh‐capacity system, beyond 1200‐km path span. The simulation results show systems advantages of having narrower spectrum than on‐off‐keying (OOK) modulation, significant tolerance to nonlinearities and low cost, compared with current OTxNs with 2.8‐dB optical signal‐to‐noise ratio (OSNR) improvement and successful mitigation of nonlinearities for as high launch powers as +4 dBm for such long distance transmission in dispersive channel.

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