An actual random code generator based on chaos laser and method for generating random code
A chaotic laser and true random code technology, applied in the field of communication, can solve the problems of poor randomness, small bandwidth, and difficulty in practical application, and achieve high randomness, stability, and low cost
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specific Embodiment approach
[0030] Fig. 2 is a structural schematic diagram of a true random code generator that realizes chaotic laser output by means of optical feedback. The specific implementation is as follows:
[0031] A true random code generator based on chaotic lasers, including a chaotic laser transmitter 1, a photodetector 2, a comparator 3 and a data processor 4, and they are connected in sequence, wherein the chaotic laser transmitter 1 includes a laser 1a, a collimating lens 2a, beam splitter 3a, optical attenuator 4a and mirror 5a, and they are connected successively between them; Described random code generator, its photodetector 2 adopts infrared detector, comparator 3 adopts single threshold comparator, data The processor 4 adopts the S-C flip-flop triggered by the leading edge.
[0032] The laser 1a is a commercial semiconductor laser (Sharp LT024MD0), the output center wavelength is 780nm laser, the output light is divided into two beams by the beam splitter 3a after passing through ...
Embodiment approach 2
[0034] Fig. 3 is another structural schematic diagram of a true random code generator that realizes chaotic laser output by means of optical injection. The specific implementation is as follows:
[0035] A true random code generator based on chaotic lasers, including a chaotic laser transmitter 1, a photodetector 2, a comparator 3 and a data processor 4, and they are connected in sequence, wherein the chaotic laser transmitter 1 includes an injection laser 1b, an optical fiber coupling 2b, optical attenuator 3b, polarization controller 4b and injected laser 5b and they are connected sequentially between them; described random code generator, its photodetector 2 adopts an infrared detector, and the comparator 3 adopts a single threshold comparator, The data processor 4 adopts the S-C flip-flop triggered by the leading edge.
[0036] The laser 1b is a commercial semiconductor laser (LDM5S752), the output center wavelength is 1550nm laser, and the output light enters the injecte...
Embodiment approach 3
[0038] Fig. 4 is another structural representation of a true random code generator that utilizes optical feedback to realize chaotic laser output, and the specific implementation is as follows:
[0039] A true random code generator based on chaotic laser, its chaotic laser transmitter 1 includes laser 1c, fiber coupler 2c, optical attenuator 3c, polarization controller 4c and reflector 5c and laser 1c, fiber coupler 2c, optical attenuator 3c, the polarization controller 4c, and the mirror 5c are sequentially connected; the true random code generator based on the chaotic laser, its photodetector 2 adopts an infrared detector, the comparator 3 adopts a single-threshold comparator, and the data processor 4 S-C flip-flop triggered by leading edge.
[0040] The laser 1c is a commercial semiconductor laser (LDM5S752), the output center wavelength is 1550nm laser, the output light passes through the fiber coupler 2c, the optical attenuator 3c and the polarization controller 4c in seq...
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