Novel Approaches for Suppression of Four Wave Mixing in WDM System Using Concocted Modulation Techniques

The problem of four wave mixing (FWM) has become the principle focus for communication Engineers in designing a wavelength division multiplexing (WDM) system which is generated due to the optical nonlinear effect of fiber in multichannel systems. It has been observed through simulations results of different techniques that FWM effect becomes maximum when the fiber dispersion level approaches to zero. In this paper we have investigated the hybrid modulations for suppressing the FWM effect in 2.5Gbps system on OptiSystem Software and proposed the three hybrid modulators schemes depending upon the level of FWM suppression considering the results of eye diagram at different power levels. During simulation we use the default values of the parameters of modulators employed. Three schemes, High level reduction, Low level reduction and Intermediate level reduction have been implemented using combination of different modulators in this paper and their simulation results show that the Intermediate level reduction technique (Hybrid Tripely Technique) is comparatively the better one.

[1]  A. Chraplyvy.  Limitations on lightwave communications imposed by optical-fiber nonlinearities , 1990 .

[2]  Gabriel Charlet,et al.  Comparison of system performance at 50, 62.5 and 100 GHz channel spacing over transoceanic distances at 40 Gbit/s channel rate using RZ-DPSK , 2005 .

[3]  A. Yariv,et al.  Compensation for phase distortions in nonlinear media by phase conjugation. , 1980, Optics letters.

[4]  Jing Liang.  FWM Compensation in DPSK Transmission by Reducing Detectors withDigital Coherent Detection Using Backward Propagation , 2011 .

[5]  K. Inoue.  Experimental study on channel crosstalk due to fiber four-wave mixing around the zero-dispersion wavelength , 1994 .

[6]  F. Forghieri,et al.  Chapter 8 – Fiber Nonlinearities and Their Impact on Transmission Systems , 1997 .

[7]  Shigeki Watanabe,et al.  Exact compensation for both chromatic dispersion and Kerr effect in a transmission fiber using optical phase conjugation , 1996 .

[8]  F. Forghieri,et al.  Reduction of four-wave mixing crosstalk in WDM systems using unequally spaced channels , 1994, IEEE Photonics Technology Letters.

[9]  Ozan K. Tonguz,et al.  A generalized suboptimum unequally spaced channel allocation technique. II. In coherent WDM systems , 1998, IEEE Trans. Commun..

[10]  H. P. Sardesai,et al.  A simple channel plan to reduce effects of nonlinearities in dense WDM systems , 1999 .

[11]  G. Raybon,et al.  Cancellation of all Kerr nonlinearities in long fiber spans using a LiNbO/sub 3/ phase conjugator and Raman amplification , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).

[12]  Shuxian Song.  The number of four-wave mixing (FWM) waves in WDM systems and its applications , 2001, LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242).

[13]  Ozan K. Tonguz,et al.  A generalized suboptimum unequally spaced channel allocation technique. I. In IM/DD WDM systems , 1998, IEEE Trans. Commun..

[14]  E. Pincemin,et al.  Impact of the fiber type and dispersion management on the performance of an NRZ 16 /spl times/ 40 Gb/s DWDM transmission system , 2004, IEEE Photonics Technology Letters.

[15]  D. Marcuse,et al.  Effect of fiber nonlinearity on long-distance transmission , 1991 .

[16]  R. Hui,et al.  Intensity-dependent phase-matching effects on four-wave mixing in optical fibers , 1999 .

[17]  T. Chikama,et al.  Generation of optical phase-conjugate waves and compensation for pulse shape distortion in a single-mode fiber , 1994 .

[18]  T. Kamalakis,et al.  New techniques for the suppression of the four-wave mixing-induced distortion in nonzero dispersion fiber WDM systems , 2005, Journal of Lightwave Technology.

[19]  B. Mukherjee,et al.  WDM-based local lightwave networks. II. Multihop systems , 1992, IEEE Network.

[20]  Z. Ghassemlooy,et al.  Evaluation of intraband crosstalk in an FBG-OC-based optical cross connect , 2002, IEEE Photonics Technology Letters.

[21]  Partha P. Mitra,et al.  Nonlinear limits to the information capacity of optical fibre communications , 2000, Nature.

[22]  Guu-chang Yang,et al.  Locating FWM crosstalk in high-capacity WDM lightwave systems , 2001, ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240).

[23]  Kumar N. Sivarajan,et al.  Optical Networks: A Practical Perspective , 1998 .

[24]  E. Yamazaki,et al.  Compensation of Interchannel Crosstalk Induced by Optical Fiber Nonlinearity in Carrier Phase-Locked WDM System , 2007, IEEE Photonics Technology Letters.

[25]  B. Mukherjee,et al.  WDM-based local lightwave networks. I. Single-hop systems , 1992, IEEE Network.

[26]  R. M. Derosier,et al.  Four-photon mixing and high-speed WDM systems , 1995 .

[27]  Atsushi Takada,et al.  Performance of nonlinear interchannel crosstalk pre-compensation at zero-dispersion wavelength using carrier phase-locked WDM , 2007 .

[28]  Guu-chang Yang,et al.  An algebraic approach to the unequal-spaced channel-allocation problem in WDM lightwave systems , 1997, IEEE Trans. Commun..

[29]  D. Christodoulides,et al.  Theory of stimulated Raman scattering cancellation in wavelength-division-multiplexed systems via spectral inversion , 1999, IEEE Photonics Technology Letters.