Analysis of bottlenecks in DWDM fiber optic communication system

Sabapathi, T.; Sundaravadivelu, S.

doi:10.1016/j.ijleo.2010.08.023

Cited by 41 publications

(12 citation statements)

References 14 publications

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“…Since in single channel systems we usually work with 10mW or near about powers but when we talk about DWDM, there usually are very huge numbers of channels that usually pile up the outcome of SRS and as a whole SRS cannot be neglected at all [7]. The SRS phenomenon has also some applications like in optical telecommunication, distributed and discrete amplification and in optical amplifications [8]. SRS can also be exploited in amplification due to its gain increasing property during downshifting of photon [9].…”

Section: Stimulated Raman Scatteringmentioning

confidence: 99%

Stimulated Raman Scattering in Wavelength Division Multiplexing System: Analysis and Compensation

Sharma¹,

Thakur²

2015

2015 IEEE International Conference on Computational Intelligence &Amp; Communication Technology

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This article pacts with one of the warning factors like Stimulated Raman Scattering in Dense Wavelength Division Multiplexing System. In this paper the influence of dispersion and of wavelength spacing are analyzed. Also the effect of channel spacing and increasing number of channels is taken into explanation. This works aims at finding the new possibilities to mitigate the effect of Stimulated Raman Scattering in Wavelength Division Multiplexing systems.

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Section: Stimulated Raman Scatteringmentioning

confidence: 99%

Stimulated Raman Scattering in Wavelength Division Multiplexing System: Analysis and Compensation

Sharma¹,

Thakur²

2015

2015 IEEE International Conference on Computational Intelligence &Amp; Communication Technology

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“…The use of simulation software allows for preliminary results, though precise enough to be considered as true [9][10][11]. The accepted method of calculation is based on the solving a complex set of differential equations, taking into account optical and electrical noise as well as linear and nonlinear effects.…”

Section: Research On Mixed Data Rate and Format Transmission In Wdm Nmentioning

confidence: 99%

Research on Mixed Data Rate and Format Transmission in WDM Networks

Jian-yi

Zhang

et al. 2013

TELKOMNIKA

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AbstrakUntuk memenuhi permintaan lalu lintas data yang terus tumbuh di aplikasi telekomunikasi, jumlah panjang gelombang jaringan serat optis tulang punggung jaringan telekomunikkasi dinaikkan. Pertumbuhan layanan internet yang eksponensial, kapasitas transmisi menjadi tantangan luar biasa bagi jaringan. Sekarang, system transmisi 10 Gb/s digunakan dalam aplikasi komersial. Dalam waktu yang sama, efek nonlinear seperti FWM, SRS, XPM, SPM dan dispersi juga meningkat saat jumlah panjang gelombang yang melewati system transmisi bertambah. Untuk analisis format modulasi efisien bagi DWDM dan system transmisi long-haul, kita akan memakai beraneka modulasi sistem DWDM. Kecepatan data maksimal format modulasi NRZ-OOK adalah 10gb/s, sedangkan untuk RZ-OOK adalah sebesar 50 Gb/s. Karena modulasi Z-OOK menggunakan lebar pita dua kali bila dibandingkan denan modulasi NRZ-OOK. Format maodulasi sebagain dinaiktarafan dari OOK menjadi PSK, pengaruh sinyal OOK terhadap sinya PSL hasil penaiktarafan harus ikut dipertimbangkan apabila menggunakan konversi panjang gelombang multikanal. Modulasi PSK juga ikut dianalisa. Kata kunci: komunikasi serat optis, DWDM, NRZ-OOK, spektrum, nonlinearitas AbstractTo meet the growing data traffic demands in the telecommunication applications, the number of wavelengths is to be increased in a fiber-optic backbone of the telecommunication network. The exponential growth of internet services, transmission capacity is a tremendous challenge to networks. Nowadays, 10 Gb/s transmission systems are being used for commercial applications. At the same time, the non-linear effects such as FWM, SRS, XPM, SPM, and Dispersion are also increased, when the number of wavelengths passing through the single fiber is increased. The analysis of efficient modulation formats for DWDM system and long-haul transmission system, we go for various modulations for DWDM system. The maximum data rate for NRZ-OOK modulation format is 10 Gb/s. For RZ-OOK the maximum rate is 50 Gb/s. Since RZ-OOK modulation uses twice the band width when compared to NRZ-OOK modulation. The modulation format is partially upgraded from OOK to PSK, the influence of OOK signals on the updated PSK signals must be considered when using multi-channel wavelength conversion. The PSK modulation is also analyzed.

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“…Using DWDM has solved our problem of high channel capacity, however, the use of very low channel spacing and high input power lead us to nonlinear effects like Stimulated Raman Scattering (SRS), Stimulated Brillouin Scattering (SBS), SelfPhase Modulation (SPM), Cross-Phase Modulation (XPM) and Four Wave Mixing (FWM) [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Four Wave Mixing by employing circular polarizers in DWDM optical networks

Manzoor

Salfi

Mehmood

et al. 2015

2015 12th International Bhurban Conference on Applied Sciences and Technology (IBCAST)

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Next generation optical communication networks demand the use of the lower channel spacing and high input power in Wavelength Division Multiplexing (WDM) systems to achieve higher data rates. However, decreasing channel spacing and increasing input power create nonlinear effects including Four Wave Mixing (FWM). In this paper a method has been introduced in which alternative circular polarizers are used to change the polarization of input pulses into right and left handed polarized pulses before multiplexer which results in reduction of FWM. With the help of this technique we can completely eliminate FWM by optimizing optical network's parameters. Exhaustive set of simulations has been performed in Optisys and system's performance has been calculated.

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Analysis of bottlenecks in DWDM fiber optic communication system

Cited by 41 publications

References 14 publications

Stimulated Raman Scattering in Wavelength Division Multiplexing System: Analysis and Compensation

Stimulated Raman Scattering in Wavelength Division Multiplexing System: Analysis and Compensation

Research on Mixed Data Rate and Format Transmission in WDM Networks

Reduction of Four Wave Mixing by employing circular polarizers in DWDM optical networks

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