{"title":"Optical Switching Based On Bragg Solitons in A Nonuniform Fiber Bragg Grating","authors":"Abdulatif Abdusalam, Mohamed Shaban","volume":84,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":1745,"pagesEnd":1754,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/9996978","abstract":"
In this paper, we consider the nonlinear pulse propagation through a nonuniform birefringent fiber Bragg grating (FBG) whose index modulation depth varies along the propagation direction. Here, the pulse propagation is governed by the nonlinear birefringent coupled mode (NLBCM) equations. To form the Bragg soliton outside the photonic bandgap (PBG), the NLBCM equations are reduced to the well known NLS type equation by multiple scale analysis. As we consider the pulse propagation in a nonuniform FBG, the pulse propagation outside the PBG is governed by inhomogeneous NLS (INLS) rather than NLS. We then discuss the formation of soliton in the FBG known as Bragg soliton whose central frequency lies outside but close to the PBG of the grating structure. Further, we discuss Bragg soliton compression due to a delicate balance between the SPM and the varying grating induced dispersion. In addition, Bragg soliton collision, Bragg soliton switching and possible logic gates have also been discussed.<\/p>\r\n","references":"[1]\tAgrawal G.P. (2001a), \u2018Applications of Nonlinear Fiber Optics\u2019, Second Edition, Academic Press, New York.\r\n[2]\tPereira S. and Sipe J.E. (2000), \u2018Light propagation through birefringent, nonlinear media with deep gratings\u2019, Phys. Rev. E, Vol.62, pp. 5745-5757.\r\n[3]\tPereira S., Sipe J.E. and Slusher R.E. (2002a), \u2018Polarization effects in birefringent Bragg gratings with a Kerr nonlinearity\u2019, J. Opt. Soc. Am. B, Vol. 19, pp. 2521-2530.\r\n[4]\tPereira S., Sipe J.E., Spalter S. and Slusher R.E. (2002b), \u2018Enhanced and suppressed birefringence in fiber Bragg gratings\u2019, J. Opt. Soc. Am. B, Vol. 19, pp.1509\u20131515.\r\n[5]\tTsoy and de Sterke C.M. (2000), \u2018Propagation of nonlinear pulses in chirped fiber gratings\u2019, Phys. Rev. E, Vol. 62, pp. 2882-2890. \r\n[6]\tPereira S. and Sipe J.E. 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