Abstract
An all-optical cryptographic device for secure communication, based on the properties of soliton beams, is presented. It can encode a given bit stream of optical pulses, changing their phase and their amplitude as a function of an encryption serial key that merge with the data stream, generating a ciphered stream. The greatest advantage of the device is real-time encrypting – data can be transmitted at the original speed without slowing down.
Highlights
An all-optical cryptographic device for secure communication, based on the properties of soliton beams, is presented. It can encode a given bit stream of optical pulses, changing their phase and their amplitude as a function of an encryption serial key that merge with the data stream, generating a ciphered stream
The device described in this paper is capable of codifying a given bit stream of optical pulses, changing their phase and their amplitude as a function of an encryption serial key that merges with the data stream, generating a ciphered stream
Their interesting properties have allowed to design a certain number of spatial optical switches which utilize the interaction between two bright or dark soliton beams, and the waveguide structures induced by these interactions [2,3,4,5,6]
Summary
The device described in this paper is capable of codifying a given bit stream of optical pulses, changing their phase and their amplitude as a function of an encryption serial key that merges with the data stream, generating a ciphered stream It is based on the special properties of spatial solitons that are, as well known, self-trapped optical beams able to propagate without any change of their spatial shape, thanks to the equilibrium, in a self-focusing medium, between diffraction and nonlinear refraction [1]. Once the properties of motion are derived, we investigate the structure from the global point of view, deriving all the properties and the operative conditions, that represents the scope of this paper
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