Abstract
We have investigated the switching performance of a gained (nonlinear directional coupler) NLDC switch in the presence of both 2nd and 4th order gain nonlinearities. In this system, we have achieved a nearly complete pulse switching at half beat length of the coupler which implies about 40% reduction in the switching length as compared to the switching length reported in Trillo et al. (1988). We have shown that at the half beat length the output energy of each branch is equal to that of the input energy and hence the gained NLDC switches have ability to be cascaded. Our initial investigations reveal that this gained NLDC switch has remarkable performance and potential to be used in ultra-fast optical communication systems.
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References
Chu P.L., Malomed B.A. and Peng G.D. (1993). Soliton Switching and propagation in nonlinear fiber couplers analytic results. Opt. Soc. Am. B 10(8): 1379–1385
Ghafouri-Shiraz H., Shum P and Nagata M. (1995). A novel method for analysis of soliton propagation in optical fibers. IEEE J. Quantum Electr. 31(1): 190–200
Ghafouri-Shiraz H. and Yu H.A. (1998). A study of Soliton propagation in a system with nonlinear gain. Microw. Opt. Techn. Lett. 17(6): 383–386
Islam M.N. (1989). Ultrafast all optical logic gates based on solito trapping in fibers. Opt. Lett. 14(22): 1257–1259
Islam M.N., Rahman L. and Simpson R. (1994). Special Erbium fiber amplifiers for short pulse switching lasers and propagation. J Lightwave Technol. 12(11): 1952–1962
Jensen S.M. (1982). The nonlinear coherent coupler. IEEE J. Quantum Electron. QE-18(10): 1580–1583
Kin Seng Chiang (1997). Propagation of Short Optical Pulses in directional couplers with Kerr Nonlinearity. Opt. Soc. Am. B 14(6): 1437–1443
Matsumoto M., Ikeda H., Uda T. and Hasegawa A. (1999). Stable soliton transition in the system with nonlinear gain. J. Lightwave Technol. 13(4): 658–665
Potasek M.J. and Yang Y. (2002). Multiterabit-per-second all-Optical switching in a nonlinear directional coupler. IEEE J. Select. Topics Quantum Electr. 8(3): 714–721
Trillo S., Wabnits S., Wright E.M. and Stegeman G.I. (1988). Soliton switching in fibre nonlinear directional couplers. Optics Let. 13(8): 672–674
Wang Y. and Wang W. (2004). Study of ultra-fast optical pulse propagation in a nonlinear directional coupler. Appl. phys. B 79(1): 51–55
Yang C.C., Villeneuve A. and Stegeman G.I. (1992). Effect of three-photon absorption on nonlinear directional coupling. Optics Lett. 17(10): 710–712
Zakery A. and Hatami M. (2005). Nonlinear optical properties of pulsed-laser-deposited GeAsSe films and simulation of a nonlinear directional coupler switch. Opt. Soc. Am. B 22(3): 591–597
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Hatami, M., Ghafouri-Shiraz, H. & Zakery, A. Analysis of a gained nonlinear directional coupler pulse switch. Opt Quant Electron 38, 1259–1268 (2006). https://doi.org/10.1007/s11082-007-9059-7
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DOI: https://doi.org/10.1007/s11082-007-9059-7