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Optimal Position of Optical Phase Conjugator for Compensation of Distorted WDM Signals with Initial Frequency Chirp  

Lee Seong-Real (Div. of Marine Electro. and Comm. Eng. Mokpo National Maritime University)
Choi Byung-Ha (Div. of Marine Electro. and Comm. Eng., Mokpo National Maritime University)
Chung Myung-Rae (Div. of Marine Electro. and Comm. Eng., Mokpo National Maritime University)
Publication Information
Journal of electromagnetic engineering and science / v.5, no.1, 2005 , pp. 36-42 More about this Journal
Abstract
In this paper, the optimal position of optical phase conjugator(OPC) excellently compensating distorted WDM channels with initial frequency chirp due to both chromatic dispersion and self phase modulation(SPM) is numerically investigated. Highly-nonlinear dispersion shifted fiber(HNL-DSF) is used as a nonlinear medium of OPC in order to widely compensate WDM signal band. It is confirmed that if the OPC position was shifted from mid-way of total transmission length dependence on the initial frequency chirp as well as modulation format and fiber dispersion coefficient, it is possible to cancel the performance degradation owing to the initial frequency chirp. Using proposed configuration, it is possible to remove all in-line dispersion compensator, reducing span losses and system costs in the long-haul broadband WDM systems.
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1 I. Brener et al., 'Cancellation of all Kerr nonlinearities in long fiber spans using a $LiNbO_3$ phase conjugator and Raman amplification', in Optical Fiber Comm. (OFC) Conf. 2000, pp. 266-268
2 Seong-Real Lee, Hwang-Bin Lim, 'Compensation characteristics dependence on the position of optical phase conjugator in 320 Gbps WDM systems', The Journal of Korea Electromag. Eng. Soc., vol. 4, no. 4, pp. 1184-1190, 2004
3 C. Lorattanasane, K. Kikuchi, 'Design theory of long-distance optical transmission systems using midway optical phase conjugation', J. Lightwave Technol., vol. 15, no. 6, pp. 948-955, 1997   DOI   ScienceOn
4 G. P. Agrawal, N. K. Dutta, Semiconductor Lasers, Ch. 6, van Nostrand-Reinhold Press, 1993
5 F. Forghieri, R. W. Tkach, and A. R. Chraplyvy, 'WDM systems with unequally spaced channels', J. Lightwave Technol., vol. 13, no. 5, pp. 889-897, 1995   DOI   ScienceOn
6 K. Inoue, 'Four-wave mixing in an optical fiber in the zero-dispersion wavelength region', J. Lightwave Technol., vol. 10, no. 11, pp. 1553-1561, 1992   DOI   ScienceOn
7 W. Pieper et al., 'Nonlinearity-insensitive standard-fiber transmission based on optical-phase conjugation in a semiconductor-laser amplifier', Electron. Lett., vol. 30, pp. 724-726, 1994   DOI   ScienceOn
8 Seong-Real Lee, Sung-Eon Cho, 'The compensation characteristics of WDM channel distortion dependence on NRZ format and RZ format', The Journal of Korea Electromag. Eng. Soc. (Korean), vol. 14, no. 11, pp. 1184-1190, 2003
9 F. Koyama, K. Iga, 'Frequency chirping in external modulators', J. Lightwave Technol., vol. 6, no. 1, pp. 87-92, 1988   DOI   ScienceOn
10 A. Yariv, D. Fekete, and D. M. Pepper, 'Compensation for channel dispersion by nonlinear optical phase conjugation', Opt. Lett., vol. 4, pp. 52-54, 1979   DOI   PUBMED
11 Seong-Real Lee, E. S. Jung, S. E. Cho, and Y. H. Lee, 'Investigation of pump light power of wideband optical phase conjugator using highly nonlinear dispersion shifted fiber in WDM systems with mid-span spectral inversion', submitted to ETRI Journal
12 N. Shibata, K. Nosu, K. Iwashita, and Y. Azuma, 'Transmission limitations due to fiber nonlinearities in optical FDM systems', IEEE J. Select. Areas in Comm., vol. 8, no. 6, pp. 1068-1077, 1990   DOI   ScienceOn
13 G. P. Agrawal, Fiber-Optic Communication Systems, John Wiley & Sons, Inc., 2002
14 S. Watanabe, M. Shirasaki, 'Exact compensation for both chromatic dispersion and Kerr effect in a transmission fiber using optical phase conjugation', J. Lightwave Technol., vol. 14, no. 3, pp. 243-248, 1996   DOI   ScienceOn
15 S. Watanabe et al., 'Generation of optical phaseconjugate waves and compensation for pulse shape distortion in a single-mode fiber', J. Lightwave Technol., vol. 12, no. 12, pp. 2139-2145, 1994   DOI   ScienceOn
16 G. P. Agrawal, Nonlinear Fiber Optics, Academic Press, 2001