STANDART TEK-MODLU FİBERLER İLE KURULMUŞ YOĞUN DALGABOYU BÖLMELİ ÇOĞULLAMA SİSTEMLERİNDE DÖRT DALGA KARIŞIMINDAN KAYNAKLANAN İŞARET ÇAPRAZ KARIŞIM ORANI DEĞİŞİMLERİNİN ANALİZİ

Year 2016, Volume: 21 Issue: 2, 171 - 188, 14.10.2016

Sait Eser Karlık

https://doi.org/10.17482/uujfe.96713

Cited By: 3

Abstract

Bu makalede, G.652 standart tek-modlu optik fiber (SSMF) kullanan, 12.5 GHz, 25 GHz, 50 GHz ve 100 GHz eşit kanallar arası boşluk değerlerine sahip, 5, 7 ve 9 kanallı yoğun dalgaboyu bölmeli çoğullama sistemlerinin (DWDM) merkez kanallarında, dört dalga karışımı (FWM) etkisinden kaynaklanan işaret çapraz karışım oranlarının (SXR) değişimi incelenmiştir. Belirtilen tipteki sistemlerde, merkez kanallar, tüm kanallar arasında FWM olayından en ağır şekilde etkilenen kanallardır. Bu nedenle, incelemeden elde edilen sonuçlar DWDM sistem performansı için en kötü hal değerleri olup sistem tasarımı açısından önemlidir. Benzetimler, SSMF fiberler için Uluslararası Haberleşme Birliği Haberleşme Standardizasyon Birimi’nin (ITU-T) G.652 Tavsiyesi’nde belirtilen değerler aralığında bulunan farklı değerlerdeki kromatik dispersiyon, dispersiyon eğimi, doğrusalsızlık katsayısı ve zayıflama katsayısı tasarım parametrelerine sahip üç farklı SSMF ticari ürününü kullanan sistemler için gerçekleştirilmiştir. Benzetimlerde, FWM etkisi altında, kanal giriş güçlerindeki, kanallar arası boşluk değerlerindeki ve fiber uzunluklarındaki değişimler ile SXR’ın nasıl değiştiği gözlemlenmiştir. Sonuçlar, optik fiber ve sistem tasarım parametrelerinin DWDM sistemlerin FWM performansı üzerindeki birleşik etkisini göstermekte olup DWDM sistemlerin hem uzak mesafe hem de erişim ağı uygulamaları için önemli ipuçları vermektedir.

Keywords

Dört Dalga Karışımı, Yoğun Dalgaboyu Bölmeli Çoğullama Sistemi; Optik Fiber; İşaret Çapraz Karışım Oranı

Analysis of Signal-to-Crosstalk Ratio Variations due to Four-Wave Mixing in Dense Wavelength Division Multiplexing Systems Implemented with Standard Single-Mode Fibers

Abstract

In this paper, variation of the signal-to-crosstalk ratio (SXR) due to effects of four-wave mixing (FWM) has been analyzed on center channels of 5-, 7-, 9-channel dense wavelength division multiplexing (DWDM) systems implemented with G.652 standard single-mode fibers (SSMFs) for 12.5 GHz, 25 GHz, 50 GHz and 100 GHz equal channel spacing values. Center channels on such systems are the most severely impacted channels by FWM. Therefore, results obtained are the worst-case values for the DWDM system performance and important for system design. Simulations have been performed for systems using three different commercially available SMFs having different design parameter values for chromatic dispersion, dispersion slope, nonlinearity coefficient and attenuation coefficient which are all in the scope of the G.652 Recommendation of Telecommunication Standardization Sector of International Telecommunication Union (ITU-T) for SSMFs. In those simulations, under the impact of FWM, variation of SXR with variations in input powers, channel spacings and link lengths have been observed. Simulation results display the combined effect of the optical fiber and system design parameters on FWM performance of DWDM systems and give important clues for not only long-haul but also access network implementations of DWDM systems.

Keywords

Four Wave Mixing, Dense Wavelength Division Multiplexing System; Optical Fiber; Signal-to-Crosstalk Ratio

References

• Abd, H.J., Al-Mansoori, M.H., Din, N.M., Abdullah, F. and Fadhil, H.A. (2014) Priority-based parameter optimization strategy for reducing the effects of four-wave mixing on WDM system, Optik-International Journal for Light and Electron Optics, 125(1), 25-30. doi:10.1016/j.ijleo.2013.06.002
• Agrawal, G.P. (2005) Nonlinear Fiber Optics, Academic Press, USA.
• Bi, M., Xiao, S., Li, J. and He, H. (2014) A bandwidth-efficient channel allocation scheme for mitigating FWM in ultra-dense WDM-PON, Optik-International Journal for Light and Electron Optics, 125(8), 1957-1961. doi:10.1016/j.ijleo.2013.11.004
• Bogoni, A and Poti, L. (2004) Effective channel allocation to reduce inband FWM crosstalk in DWDM transmission systems, IEEE Journal of Selected Topics in Quantum Electronics, 10(2), 387-392. doi:10.1109/JSTQE.2004.825952
• Handa, M., Singh, M.L. and Singh, R. (2014) Performance analysis of optical WDM system based on unequal spaced channel allocation (USCA) scheme, Optik-International Journal for Light and Electron Optics, 125(16), 4262-4264. doi:10.1016/j.ijleo.2014.04.012
• Harboe, P.B., da Silva, E. and Souza, J.R. (2008) Analysis of FWM penalties in DWDM systems based on G.652, G.653, and G.655 optical fibers, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, 2(12), 2674-2680.
• Hiçdurmaz, B., Temurtaş, H., Karlık, S.E. and Yılmaz, G. (2013) A novel method degrading the combined effect of FWM and ASE noise in WDM systems containing in-line optical amplifiers, Optik-International Journal for Light and Electron Optics, 124(19), 4064-4071. doi:10.1016/j.ijleo.2012.12.071
• ITU-T Recommendation G.652 (2009) Characteristics of a single-mode optical fibre and cable, ITU, Geneva.
• ITU-T Recommendation G.671 (2002) Transmission characteristics of optical components and subsystems, ITU, Geneva.
• ITU-T Recommendation G.694.1 (2012) Spectral grids for WDM applications: DWDM frequency grid, ITU, Geneva.
• Kaler, R. and Kaler, R.S. (2012) Investigation of four wave mixing effect at different channel spacing, Optik-International Journal for Light and Electron Optics, 123(4), 352-356. doi:10.1016/j.ijleo.2011.01.017
• Karlık, S.E. (2016) Analysis of the four-wave mixing impact on the most heavily affected channels of dense and ultra-dense wavelength division multiplexing systems using non-zero dispersion shifted fibers, Optik-International Journal for Light and Electron Optics, 127(19), 7469-7486. doi:10.1016/j.ijleo.2016.05.077
• Kaur, G. and Singh, M.L. (2009) Effects of four-wave mixing in WDM optical fibre systems, Optik-International Journal for Light and Electron Optics, 120(6), 268-273. doi:10.1016/j.ijleo.2007.08.007
• Maeda, M.W., Sessa, W.B., Way, W.I., Yi-Yan, A., Curtis, L., Spicer, R. and Laming, R.I. (1990) The effect of four-wave mixing in fibers on optical frequency-division multiplexed systems, Journal of Lightwave Technology, 8(9), 1402-1408. doi:10.1109/50.59171
• Nakajima, K., Ohashi, M., Miyajima, Y. and Shiraki, K. (1997) Assessment of dispersion varying fibre in WDM system, Electronics Letters, 33(12), 1059-1060. doi:10.1049/el:19970699
• Noshad, M. and Rostami, A. (2012) FWM minimization in WDM optical communication systems using the asymmetrical dispersion-managed fibers, Optik-International Journal for Light and Electron Optics, 123(9), 758-760. doi:10.1016/j.ijleo.2011.06.022
• Rostami, A., Rahbari, J. and Andalib, A. (2013) Investigation of power penalty in WDM systems for dispersion managed fibers, Optik-International Journal for Light and Electron Optics, 124(15), 2072-2075. doi:10.1016/j.ijleo.2012.06.065
• Schneider, T. (2004) Nonlinear Optics in Telecommunications, Springer-Verlag, Germany.
• Singh, A., Sharma, A.K. and Kamal, T.S. (2009) Investigation on modified FWM suppression methods in DWDM optical communication system, Optics Communications, 282(3), 392-395. doi:10.1016/j.optcom.2008.10.014
• Tkach, R.W., Chraplyvy, A.R., Forghieri, F., Gnauck, A.H. and Deroiser, R.M. (1995) Four-photon mixing and high-speed WDM systems, Journal of Lightwave Technology, 13(5), 841-849. doi:10.1109/50.387800
• Wehmann, C.F., Fernandes, L.M., Sobrinho, C.S., Lima, J.L.S., da Silva, M.G., de Almeida, E.F., Medeiros Neto, J.A. and Sombra, A.S.B. (2005) Analysis of the four wave mixing effect (FWM) in a dispersion decreasing fiber (DDF) for a WDM system, Optical Fiber Technology, 11(3), 306-318. doi:10.1016/j.yofte.2005.01.003