Snake like light beam propagation in Multimode Periodic Segmented Waveguide
نویسندگان
چکیده
In this article it is shown that for specific initial conditions an input beam injected in a Multimode Periodic Segmented Waveguides (MPSW) does not diffract and remains collimated all along the waveguide whereas a speckle like pattern is expected at the output of a multimode structure. This nonintuitive behavior can be explained with the help of ray and wave chaos properties. A modal analysis developed in this article reveals that this nondiffractive beam regime is due to a specific superposition of modes with regularly spaced propagation constants. A discrepancy with the commonly used Equivalent Continuous Waveguide model (ECWG) is also identified. OCIS codes: (130.2790) Guided waves,(230.7370) Waveguides,(190.3100) Instabilities and chaos http://dx.doi.org/10.1364/XX.99.099999 ∗ [email protected]
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