An Optical Signal Encryption/Decryption System Based on Time Lens Imaging
A technology of time lens and imaging subsystem, applied in optical transmission systems and other directions, can solve the problems of inability to realize the encryption and decryption of optical signals, and the inability to prevent theft and misappropriation of optical information by criminals. The effect of secure transmission of optical signals
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[0019] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.
[0020] refer to Figure 1 ~ Figure 4 , an optical signal encryption / decryption system based on time lens imaging, including a time lens imaging subsystem; the time lens imaging subsystem is composed of an input segment optical fiber, a time lens and an output segment optical fiber, and two of the output segment optical fibers order dispersion φ 2 ″ and the second-order dispersion φ of the input fiber 1 "On the contrary, that is, φ 2 ″=-φ 1 "; The magnification M=φ of the time lens imaging subsystem 2 "φ 1 ″=-1; in all 0-yard time periods of the pump light sequence flow, the time lens effect does not occur, and the signal sequence in the time period covered by it remains unchanged; in all 1-yard time periods of the pump light sequence flow In , the time lensing e...
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