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Analysis of a gained nonlinear directional coupler pulse switch |
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| Authors: | Mohsen Hatami H. Ghafouri-Shiraz A. Zakery |
| Affiliation: | (1) Department of Electronic, Electrical and Computer Engineering, University of Birmingham, Edgbaston, B15 2TT, UK;(2) Department of Physics, Shiraz University, Golestan Avenue, 71454 Shiraz, Iran;(3) Department of Physics, Yazd University, P.O. Box 89195-741, Yazd, Iran |
| 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. |
| Keywords: | Nonlinear gain system Nonlinear directional coupler Nonlinear optics Soliton witching |
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